Centre for Molecular Microbiology and Infection, Imperial College, Exhibition Road, South Kensington, London, UK.
The aim of these guidelines is to describe a practical but evidence-based approach to the diagnosis and treatment of central nervous system tuberculosis in children and adults. We have presented guidance on tuberculosis meningitis (TBM), intra-cerebral tuberculoma without meningitis, and tuberculosis affecting the spinal cord.
Our key recommendations are as follows:
1. TBM is a medical emergency. Treatment delay is strongly associated with death and empirical anti-tuberculosis therapy should be started promptly in all patients in whom the diagnosis of TBM is suspected. Do not wait for microbiological or molecular diagnostic confirmation.
2. The diagnosis of TBM is best made with lumbar puncture and examination of the cerebrospinal fluid (CSF). Suspect TBM if there is a CSF leucocytosis (predominantly lymphocytes), the CSF protein is raised, and the CSF:plasma glucose is <50%. The diagnostic yield of CSF microscopy and culture for Mycobacterium tuberculosis increases with the volume of CSF submitted; repeat the lumbar puncture if the diagnosis remains uncertain.
3. Imaging is essential for the diagnosis of cerebral tuberculoma and tuberculosis involving the spinal cord, although the radiological appearances do not confirm the diagnosis. A tissue diagnosis (by histopathology and mycobacterial culture) should be attempted whenever possible, either by biopsy of the lesion itself, or through diagnostic sampling from extra-neural sites of disease e.g. lung, gastric fluid, lymph nodes, liver, bone marrow.
4. Treatment for all forms of CNS tuberculosis should consist of 4 drugs (isoniazid, rifampicin, pyrazinamide, ethambutol) for 2 months followed by 2 drugs (isoniazid, rifampicin) for at least 10 months. Adjunctive corticosteroids (either dexamethasone or prednisolone) should be given to all patients with TBM, regardless of disease severity.
5. Children with CNS tuberculosis should ideally be managed by a paediatrician with familiarity and expertise in paediatric tuberculosis or otherwise with input from a paediatric infectious diseases unit. The Children's HIV Association of UK and Ireland (CHIVA) provide further guidance on the management of HIV-infected children (www.chiva.org.uk).
6. All patients with suspected or proven tuberculosis should be offered testing for HIV infection. The principles of CNS tuberculosis diagnosis and treatment are the same for HIV infected and uninfected individuals, although HIV infection broadens the differential diagnosis and anti-retroviral treatment complicates management.
Tuberculosis in HIV infected patients should be managed either within specialist units by physicians with expertise in both HIV and tuberculosis, or in a combined approach between HIV and tuberculosis experts.
The co-administration of anti-retroviral and anti-tuberculosis drugs should follow guidance issued by the British HIV association (www.bhiva.org).
PMID: 19643501 [PubMed - as supplied by publisher]
Global tuberculosis control - epidemiology, strategy, financing
This report is WHO's thirteenth annual report on global tuberculosis control in a series that started in 1997.
The report presents WHO's latest assessment of the epidemiological burden of TB (numbers of cases and deaths), as well as progress towards the 2015 targets for global TB control that have been established within the context of the Millennium Development Goals (MDGs). It also includes a thorough analysis of implementation and financing of the WHO's Stop TB Strategy and the Stop TB Partnership's Global Plan to Stop TB, since in combination these have set out how TB control needs to be implemented and funded to achieve the 2015 targets. The report gives particular attention to the period 2006–2009, but selected epidemiological, implementation and financial data are presented for previous years as well. This includes epidemiological data back to 1990 and financial data back to 2002.
Bringing together data reported by 196 out of 212 countries and territories in 2007, as well as data collected from these countries and territories in previous years, Global tuberculosis control 2009 is the definitive source of information about the national and international response to the worldwide TB epidemic.
A MINISTERIAL MEETING OF HIGH M/XDR-TB BURDEN COUNTRIES
Ministers from high M/XDR-TB burden countries will meet in Beijing, China, on 1-3 April 2009, to urgently address the alarming threat of MDR-TB. Organized by the World Health Organization, together with the Ministry of Health of the People's Republic of China and the Bill & Melinda Gates Foundation, this ministerial meeting, aims:
To build consensus and political commitment globally and in high M/XDR-TB burden countries; and
To act immediately to scale up the prevention and management of MDR-TB and start developing 5-year national strategic plans for MDR-TB, embedded within national TB and health sector plans.
It is expected that this will be reflected in a Call for Action on M/XDR-TB to help strengthen health agendas and ensure that urgent and necessary commitments for actions and funding are made to prevent this impending epidemic. A preceding call for action by community representatives coming out of the Stop TB Partners Forum in Rio de Janeiro, Brazil, in March 2009, will also be presented in Beijing.
The pandemic is growing in many places, and strains resistant to all existing drugs are emerging. To fight back, biologists are applying a host of cutting-edge drug development strategies
Key Concepts
Tuberculosis is second only to HIV as the worldwide cause of death from infection, and the pandemic is growing in many places.
TB is caused by a bacterium. Most cases are treatable, but strains resistant to first- and second-line drugs are on the rise.
Conventional approaches to developing new antibiotics and vaccines against the disease have mostly failed.
New tools are enabling scientists to study the TB-causing bacterium in greater detail, offering unprecedented insight into the interactions between pathogen and host. The results are exposing promising new targets for drug therapy
Bubonic plague, smallpox, polio, HIV—the timeline of history is punctuated with diseases that have shaped the social atmospheres of the eras, defined the scope of science and medicine, and stolen many great minds before their time. But there is one disease that seems to have stalked humanity far longer than any other: tuberculosis. Fossil evidence indicates that TB has haunted humans for more than half a million years. No one is exempt. It affects rich and poor, young and old, risk takers and the abstinent. Simply by coughing, spitting or even talking, an infected individual can spread the bacterium that causes the disease.
Today TB ranks second only to HIV among infectious killers worldwide, claiming nearly two million lives annually, even though existing drugs can actually cure most cases of the disease. The problem is that many people lack access to the medicines, and those who can obtain the drugs often fail to complete the lengthy treatment regimen.
Additionally, TB is evolving faster than our therapies are. In recent years, investigators have observed a worrying rise in the number of cases resistant to more than one of the first-line drugs used to treat the illness. Even more alarming, we have begun to see the emergence of strains that are resistant to every last one of the antibiotic defenses.
The disease is particularly devastating for the developing nations, where some 90 percent of cases and 98 percent of TB deaths occur. Beyond bringing untold suffering and sorrow there, TB harms entire economies. With 75 percent of cases arising in people between the ages of 15 and 54, TB will rob the world’s poorest countries of an estimated $1 trillion to $3 trillion over the next 10 years. Furthermore, the disease forces these struggling nations to divert precious resources from other important areas into health care. But the developed world would be mistaken to consider itself safe: although the incidence there is comparatively low, that situation could change if a highly resistant strain were to gain traction.
As bleak as this state of affairs is, we have reason to be hopeful. Cutting-edge biomolecular technologies are enabling researchers to study the complex interactions between the TB bacterium and the body in unprecedented detail, generating insights that are informing the development of novel diagnostic tests and drug therapies.
The Strategic Plan for TB Control in Indonesia: 2006-2010
Seven strategies have been outlined in this strategic plan document. They have been developed by taking into account the global and regional TB plans as well as previous Indonesian TB strategic plan and its current achievements and challenges. The strategies represent the grand strategy for TB control, i.e., expansion of the TB control program, supported by managerial functions necessary for its acceleration. These strategies are:
Pursue quality DOTS expansion and enhancement
Address TB/HIV, MDR-TB and other challenges
Involve all care providers
Engage people with TB and affected communities
supported by:
Strengthening policy and fostering local ownership of the TB control program
Contributing to health system strengthening and management of the TB control
program, and
Enabling and promoting research.
For each strategy, this plan further elaborates its objectives, program interventions, activities and indicators.
The total cost needed for the TB control program for five years is USD 287,247,285,
with increasing government contributions overtime. However, the need to start a gradual transition from external to local government funding sources is obvious, particularly for years 2008-2010.
This plan ends with an implementation strategy to translate strategy into actual
performance. At all levels, five key performance factors need to be taken into consideration.
These are:
Ensuring effective dissemination and communication of the strategic plan to all key
stakeholders and public
Developing a detailed operational plan with clear accountability to complement the
strategic plan
Secure high-level commitment, support and effective leadership
Ensuring adequate level of resources to carry out the strategy, and
Building a performance monitoring and evaluation system.
The Global tuberculosis control 2008, released by WHO, finds that the pace of the progress to control the tuberculosis (TB) epidemic slowed slightly in 2006, the most recent year for which data were available.
The new information documents a slowdown in progress on diagnosing people with TB. Between 2001 to 2005, the average rate at which new TB cases were detected was increasing by 6% per year; but between 2005 and 2006 that rate of increase was cut in half, to 3%.
The reason for this slowing of progress is that some national programmes that were making rapid strides during the previous five years have been unable to continue at the same pace in 2006. Moreover, in most African countries there has been no increase in the detection of TB cases through national programmes.
Other studies have also shown that many patients are treated by private care providers, and by non-governmental, faith-based and community organizations, thus escaping detection by the public programmes.
"We've entered a new era," said Dr Margaret Chan, WHO Director-General. "To make progress, firstly public programmes must be further strengthened. Secondly, we need to fully tap the potential of other service providers. Enlisting these other providers, working in partnership with national programmes, will markedly increase diagnosis and treatment for people in need."
This is the 12th annual WHO report on global TB control, and is based on data given to WHO by 202 countries and territories. There were 9.2 million new cases of TB in 2006, including 700 000 cases among people living with HIV, and 500 000 cases of multi-drug resistant TB (MDR-TB). An estimated 1.5 million people died from TB in 2006. In addition, another 200 000 people with HIV died from HIV-associated TB.
Two potential barriers to progress
The report highlights two aspects of the epidemic that could further slow progress on TB. The first is multidrug-resistant tuberculosis (MDR-TB), reported by WHO last month to have reached the highest levels ever recorded. To date, however, the response to this epidemic has been inadequate. Given limited laboratory and treatment capacity, countries project they will provide treatment only to an estimated 10% of people with MDR-TB worldwide in 2008.
The second threat to continued progress is the lethal combination of TB and HIV, which is fuelling the TB epidemic in many parts of the world, especially Africa. Although TB/HIV remains a massive challenge, some countries are making strides against the co-epidemic. Almost 700 000 TB patients were tested for HIV in 2006, up from 22 000 in 2002 - a sign of progress but still far from the 2006 target of 1.6 million set by the Global Plan to Stop TB 2006-2015. The three African countries achieving the highest HIV testing rates in TB care settings in 2006 were Rwanda (76%), Malawi (64%) and Kenya (60%).
"The report tells us that we are far from providing universal access to high-quality prevention, diagnostic, treatment and care services for HIV and TB," said Dr Peter Piot, Executive Director of UNAIDS, the Joint United Nations Programme on HIV/AIDS. "Clear progress has been made but we must all do more to make a joint approach to reducing TB deaths among people with HIV a reality."
The report also documents a shortage in funding. Despite an increase in resources, especially from the Global Fund and some middle-income countries, TB budgets are projected to remain flat in 2008 in almost all of the countries most heavily burdened by the disease. Ninety countries in which 91% of the world's TB cases occur provided complete financial data for the report. To meet the 2008 targets of the Global Plan to Stop TB, the funding shortfall for these 90 countries is about US$ 1 billion.
"We look forward to working with all partners to further assist countries to achieve TB targets for 2015 and beyond," said Dr Michel Kazatchkine, Executive Director of the Global Fund to Fight AIDS, Tuberculosis and Malaria. "Together we are bringing hope to the individuals and communities suffering from the enormous burden of TB." In recognition of World TB Day on 24 March, Dr Jorge Sampaio, former President of Portugal and the UN Secretary-General's Special Envoy to Stop TB, called for enhanced leadership to address TB/HIV. "TB is a leading cause of death among people living with HIV/AIDS," he said. "Several countries have shown that targets relating to TB/HIV are achievable and have put in place measures that will have an impact on the lives of those at most risk. But this is a restless battle. We still need to do much more and much better."
WHO REPORT 2008
Tuberculosis (TB) is a major cause of illness and death worldwide, especially in Asia and Africa. Globally, 9.2 million new cases and 1.7 million deaths from TB occurred in 2006, of which 0.7 million cases and 0.2 million deaths were in HIV-positive people. Population growth has boosted these numbers compared with those reported by the World Health Organization (WHO) for previous years. More positively, and reinforcing a finding first reported in 2007, the number of new cases per capita appears to have been falling globally since 2003, and in all six WHO regions except the European Region where rates are approximately stable. If this trend is sustained, Millennium Development Goal 6, to have halted and begun to reverse the incidence of TB, will be achieved well before the target date of 2015. Four regions are also on track to halve prevalence and death rates by 2015 compared with 1990 levels, in line with targets set by the Stop TB Partnership. Africa and Europe are not on track to reach these targets, following large increases in the incidence of TB during the 1990s. At current rates of progress these regions will prevent the targets being achieved globally.
Global Health TV has produced a new film about the Stop TB Parternship, Striving for a World Free of Tuberculosis. The film features an interview with Executive Secretary Dr Marcos Espinal and a close-up of the vital role partnership is playing in advancing TB control in Brazil. The film was shown throughout the Geneva Health Forum in May and had a high profile at the event.
We invite you to view the film by linking to our web page www.stoptb.org.
Research
Tuberculosis | Researchers Plan To Study Effects of HIV, TB on Children's Brains
[Mar 14, 2008]
Researchers at Stellenbosch University's medical school in South Africa plan to conduct a study to examine the effects of tuberculosis and HIV on areas of children's brains, which could lead to better ways to diagnose TB in the population, the Independent Online reports. The researchers are waiting to hear whether they will receive a grant from NIH to conduct the research.
Stellenbosch radiology professor Savvas Andronikou and colleagues plan to use a new magnetic resonance imaging scanner to examine the brains of 100 children annually who have been diagnosed with HIV, TB or HIV/TB coinfection. The researchers will work to identify markers that can be used to diagnose TB in children using less sophisticated scans, such as chest X-rays. Andronikou said that when researchers compare CT scans with MRI scans, they "find that diagnostic features are being missed in as many as 30% of cases. And chest X-rays are even more unreliable." He added that sputum tests, which are the current standard for TB diagnosis, are about 33% effective.
Andronikou said the "step-down research" will prove "something using high-end imaging to secure the most reliable imaging on cheaper and more widely available equipment." He added that the medical school is a "suitable environment" for the study. "We have so many patients with TB and HIV, high-tech facilities and the most experienced researchers and clinicians in the field," he said, adding that neuroimaging could help find better ways to manage TB and HIV. "We're looking for a new take on making cheaper and accessible things like X-rays more reliable so that we have an alternative to the currently long waits for results from laboratories," Andronikou said (Caelers, Independent Online, 3/13).
WHO REPORT 2007
Global Tuberculosis Control - Surveillance, Planning, Financing
Global Tuberculosis Control 2007, the eleventh annual report in the series, marks a watershed in the epidemiology and control of tuberculosis (TB). With the latest surveillance data (for 2005), we can ask whether national TB control programmes (NTPs) around the world met the 2005 targets of 70% case detection and 85% cure set by the World Health Assembly. Looking forward from 2006, we can consider how effectively the Stop TB Strategy was launched in its first year, through implementation of The Global Plan to Stop TB, 2006–2015. And, as international debate about TB control focuses more on epidemiological impact (as the consequence of implementation), we can assess whether countries with a high burden of TB, regions of the World Health Organization (WHO) and the world as a whole are on track to meet the United Nations Millennium Development Goals (MDGs) for TB by 2015.
Tuberculosis – By 2015, to have halted and begun to reverse the incidence of malaria and other major diseases.
Are we on track to meet the target?
There has been substantial progress in reversing the spread of TB in Asia and Latin America and the Caribbean. This is offset however by an increase of the problem in sub-Saharan Africa and the Commonwealth of Independent States, where the number of TB cases (excluding people who are HIV positive) has increased between 1990 and 2005.
The following rates are based upon the World Health Organization's (WHO) most recently available three years (2003, 2004 and 2005) of estimated sputum smear positive pulmonary tuberculosis (TB) rates. The three year moving average is used to adjust for unstable rates in some jurisdictions. The estimated sputum smear positive pulmonary TB rates are used, rather than the country/territory reported incidence rates, as they adjust for under-reporting of cases in some jurisdictions and are more indicative of the current risk of being infected by residence or prolonged travel in the country/territory. These rates are effective March 24, 2007 and will be revised annually.
For advice on the use of these rates in TB screening programs, please contact your local public health unit/TB program, provincial/territorial TB program or Tuberculosis Prevention and Control, Public Health Agency of Canada.
Sources for current calculations: World Health Organization, Global Tuberculosis Control: Surveillance, Planning, Financing. Who Reports 2005, 2006 and 2007. Geneva, Switzerland,
Countries
WHO estimated sputum smear positive pulmonary TB rate per 100 000 (3 year average)
Countries
WHO estimated sputum smear positive pulmonary TB rate per 100 000 (3 year average)
Afghanistan
125
Libyan Arab Jamahiriya
9
Albania
10
Lithuania
29
Algeria
24
Luxembourg
5
American Samoa
10
Madagascar
99
Andorra
8
Malawi
175
Angola
115
Malaysia
46
Anguilla
11
Maldives
21
Antigua & Barbuda
3
Mali
125
Argentina
19
Malta
3
Armenia
33
Marshall Islands
52
Australia
3
Mauritania
130
Austria
6
Mauritius
29
Azerbaijan
34
Mexico
13
Bahamas
17
Micronesia
34
Bahrain
19
Monaco
1
Bangladesh
105
Mongolia
86
Barbados
5
Montenegro
15
Belarus
26
Montserrat
4
Belgium
6
Morocco
47
Belize
22
Mozambique
189
Benin
39
Myanmar
76
Bermuda
2
Namibia
290
Bhutan
48
Nauru
25
Bolivia
98
Nepal
86
Bosnia & Herzegovina
24
Netherlands
3
Botswana
259
Netherlands Antilles
4
Brazil
27
New Caledonia
21
British Virgin Islands
7
New Zealand
5
Brunei Darussalam
24
Nicaragua
27
Bulgaria
18
Niger
71
Burkina Faso
84
Nigeria
125
Burundi
147
Niue
15
Cambodia
226
Northern Mariana Is
29
Cameroon
76
Norway
2
Canada
2
Oman
5
Cape Verde
77
Pakistan
82
Cayman Islands
2
Palau
26
Central African Republic
134
Panama
20
Chad
113
Papua New Guinea
107
Chile
7
Paraguay
31
China
46
Peru
80
China, Hong Kong SAR
34
Philippines
132
China, Macao SAR
37
Poland
13
Colombia
22
Portugal
18
Comoros
21
Puerto Rico
2
Congo
162
Qatar
26
Cook Islands
11
Rep. Korea
41
Costa Rica
6
Republic of Moldova
62
Côte d'Ivoire
168
Romania
64
Croatia
19
Russian Federation
51
Cuba
4
Rwanda
160
Cyprus
2
Saint Kitts & Nevis
5
Czech Republic
5
Saint Lucia
7
Denmark
3
Samoa
12
Djibouti
328
San Marino
3
Dominica
7
Sao Tome & Principe
48
Dominican Republic
41
Saudi Arabia
18
DPR Korea
80
Senegal
111
DR Congo
158
Serbia
15
Ecuador
60
Seychelles
15
Egypt
12
Sierra Leone
199
El Salvador
24
Singapore
16
Equatorial Guinea
95
Slovakia
9
Eritrea
121
Slovenia
7
Estonia
20
Solomon Islands
39
Ethiopia
154
Somalia
156
Fiji
12
South Africa
252
Finland
4
Spain
12
France
5
Sri Lanka
27
French Polynesia
13
St Vincent & Grenadines
13
Gabon
117
Sudan
98
Gambia
105
Suriname
29
Georgia
37
Swaziland
469
Germany
4
Sweden
2
Ghana
91
Switzerland
3
Greece
8
Syrian Arab Republic
18
Grenada
2
Tajikistan
82
Guam
23
TFYR Macedonia
14
Guatemala
34
Thailand
63
Guinea
105
Timor-Leste
250
Guinea-Bissau
88
Togo
158
Guyana
62
Tokelau
17
Haiti
136
Tonga
12
Honduras
35
Trinidad & Tobago
4
Hungary
12
Tunisia
10
Iceland
1
Turkey
12
India
75
Turkmenistan
30
Indonesia
115
Turks & Caicos Islands
9
Iran
12
Tuvalu
54
Iraq
52
Uganda
271
Ireland
5
Ukraine
43
Israel
4
United Arab Emirates
8
Italy
3
United Kingdom
5
Jamaica
3
UR Tanzania
150
Japan
13
Uruguay
12
Jordan
2
US Virgin Islands
5
Kazakhstan
66
USA
2
Kenya
168
Uzbekistan
52
Kiribati
75
Vanuatu
27
Kuwait
12
Venezuela
19
Kyrgyzstan
55
Viet Nam
79
Lao PDR
70
Wallis & Futuna Is
16
Latvia
31
West Bank and Gaza Strip
10
Lebanon
5
Yemen
40
Lesotho
282
Zambia
265
Liberia
124
Zimbabwe
260
The Recent TB Epidemic
The registered number of new cases of TB worldwide roughly correlates with economic conditions: the highest incidences are seen in those countries of Africa, Asia, and Latin America with the lowest gross national products. WHO estimates that eight million people get TB every year, of whom 95% live in developing countries. An estimated 3 million people die from TB every year.
In industrialized countries, the steady drop in TB incidence began to level off in the mid-1980s and then stagnated or even began to increase. Much of this rise can be at least partially attributed to a high rate of immigration from countries with a high incidence of TB. It is also difficult to perform epidemiological surveillance and treatment in immigrant communities due to various cultural differences.
A great influence in the rising TB trend is HIV infection. Chances are that only one out of ten immunocompetent people infected with M. tuberculosis will fall sick in their lifetimes, but among those with HIV, one in ten per year will develop active TB, while one in two or three tuberculin test positive AIDS patients will develop active TB. In many industrialized countries this is a tragedy for the patients involved, but it these cases make up only a small minority of TB cases. In developing countries, the impact of HIV infection on the TB situation, especially in the 20-35 age group, is worthy of concern.
A final factor contributing to the resurgence of TB is the emergence of multi-drug resistance. Drug resistance in TB occurs as a result of tubercle bacillus mutations. These mutations are not dependent upon the presence of the drug. Exposed to a single effective anti-TB medication, the predominant bacilli, sensitive to that drug, are killed; the few drug resistant mutants, likely to be present if the bacterial population is large, will, multiply freely. Since it is very unlikely that a single bacillus will spontaneously mutate to resistance to more than one drug, giving multiple effective drugs simultaneously will inhibit the multiplication of these resistant mutants. This is why it is absolutely essential to treat TB patients with the recommended four drug regimen of isoniazid, rifampin, pyrazinamide and ethambutol or streptomycin.
While wealthy industrialized countries with good public health care systems can be expected to keep TB under control, in much of the developing world a catastrophe awaits. It is crucially important that support be given to research efforts devoted to developing an effective TB vaccine, shortening the amount of time required to ascertain drug sensitivities, improving the diagnosis of TB, and creating new, highly effective anti-TB medications. Without support for such efforts, we run the risk of losing the battle against TB.
TBNI
International
Millennium Goals: Burma Must Tackle TB and HIV
BANGKOK,
Sep 5 (IPS) - For over 15 years a clinic
in Mae Sot, a town along Thailand's north-western
border, has offered a glimpse into how widespread
tuberculosis (TB) is in neighbouring Burma.
It is to that clinic, run by Dr.Cynthia
Maung, that a stream of poor men, women
and children, escaping military-ruled
Burma for Thailand, come to for a health
check. ''In 2004 we detected 700 cases
of TB, of which 250 needed treatment,''
said Maung, herself a refugee who fled
Burma in 1988 following Rangoon's harsh
crackdown on a pro-democracy movement.
TB remains one of the major diseases
that the hundreds crossing over from Burma
suffer from, she explained during a telephone
interview from her clinic in Mae Sot.
''We are concerned because every year
the cases are high''.
Similar conclusions have been reached
by officials at Thailand's ministry of
public health, given the number of TB
cases that have been detected during mandatory
health tests done to the thousands of
migrants from Burma who seek legal employment
in this country.
In 2003, for instance, there were 1,766
Burmese with TB who required follow-up
treatment, states a health ministry study.
The infection that followed TB was syphilis,
with 952 cases.
In 2002, in the Tak province alone, where
Mae Sot is located, Thai health officials
had required 885 Burmese to commence medical
treatment for TB. That was out of an estimated
30,000 migrant workers who were seeking
jobs in the large agriculture farms and
the many garment factories there.
The number of migrant workers with TB
has added to the incidence rate of this
killer disease in Thailand, compelling
Bangkok to step up TB detection and treatment
efforts. ''This year we put TB among one
of the priority problems we have to tackle,''
Dr. Kamnuan Ungchasuk, director of the
bureau of epidemiology at the health ministry,
told IPS.
These numbers, however, are dwarfed by
reports that Burma has 97,000 new cases
of TB ever year and this South-east Asian
nation is classified by the World Health
Organisation (WHO) as being among the
world's 22 'high burden'countries with
the disease.
More troubling for public health experts
is the high prevalence of multi-drug resistant
TB (MDRTB) in Burma. It has four percent
new cases of MDRTB, states the Geneva-based
health body.
The frequency of MDRTB, which is incurable
since it does not respond to available
cheap anti-TB drugs, has placed Burma
on the top of the list of afflicted countries
in the region.
According to the WHO, Thailand has 0.9
percent of the new cases of MDRTB, Bangladesh
has 1.4 percent new cases and even India,
the country with the greatest TB burden,
there are only 3.4 percent new MDRTB cases
annually.
The only country in East Asia worse off
than Burma for new MDRTB cases is China,
with a reported 5.3 percent prevalence
rate.
''The situation in Myanmar is a concern
because four percent new cases in a high
burden country is no trivial number of
patients - several thousands, likely between
4,000-6,000 cases,'' a WHO official told
IPS.
Such revelations about Burma, whose military
rulers changed the country's name to Myanmar,
come at a time when there is a global
effort to rid the world of this pandemic,
which kills nearly two million men, women
and children every year.
As part of the Millennium Development
Goals (MDGs), world leaders pledged at
a U.N. summit in New York in 2000 to stop
the spread of the world's leading killer
diseases - AIDS, TB and malaria - by 2015.
Other MDGs to be achieved by that year
include halving the number of those living
on less than one US dollar a day, ensuring
universal primary education for all boys
and girls, reducing by two-thirds the
number of children who die before reaching
five years of age and reducing by three-fourths
the number of women who die while giving
birth.
And the WHO makes the alarming prediction
of what the world will be faced with if
TB, a curable infectious disease, is not
overcome. In the next 20 years, almost
one billion people will become newly infected,
200 million people will develop the disease
and 35 million will die from it, it states.
It is a scenario made worse by the ease
with which TB feeds off the other global
pandemic, AIDS, which killed 3.1 million
people last year. ''TB is the leading
killer of people infected with HIV,''
states the WHO, due to the weak immune
systems of those with the virus that causes
AIDS.
Currently, some 14 million people are
co-infected with TB and HIV, of which
70 percent are in Africa.
The likelihood of Burma adding to those
numbers has grown in the light of the
fact that the country has the second highest
prevalence rate of HIV in South-east Asia
with an estimated 170,000 to 620,000 people
living with the killer disease, according
to a U.N. agency.
And a decision by an international funding
agency to pull out of Burma in August
due to roadblocks imposed by the military
regime -- consequently hampering its 98.4
million-dollar contributions for programmes
to combat AIDS, TB and malaria - has set
off more alarm bells.
Yet, the WHO feels that such concern,
at least over TB, may be misplaced, since
the junta has implemented a range of public
health initiatives despite its limited
resources and a weak health system.
''For a resource-constrained country,
Myanmar has a well functioning TB programme
and a very good laboratory, which should
enable the country to address the problem
of MDRTB,'' says the WHO official.
''Political commitment to DOTS is high
in Myanmar,'' added the official, referring
to the Directly Observed Treatment Short
Course strategy of diagnosing and ensuring
administration of cheap anti-TB drugs
to patients.
''DOTS coverage is 100 percent, meaning
that all of the 324 townships have a DOTS
clinic, although access to services varies
widely''.
The
Human And Economic Impact Of TB
Tb
And Poverty
Poverty, a lack of basic health services,
poor nutrition and inadequate living conditions
all contribute to the spread of TB. In turn,
illness and death from TB reinforces and
deepens poverty in many communities.
Across the globe, the poor
are at greater risk of TB. Studies in India
have shown that the prevalence of TB is
between two and four times higher among
groups with low income and no schooling.
Overcrowded conditions, poor nutrition and
inadequate sanitation increase the probability
of being
infected and developing active TB. Once
they are ill, those who have limited access
to health services are less likely to be
diagnosed and treated for TB. The greater
the numbers of people with active TB in
a community, the more likely others are
to become infected. This becomes a vicious
circle in poor communities where TB flourishes.
Over 90% of TB cases and 90% of deaths from
TB occur in developing countries.
A key challenge for TB
control today is finding those people who
have limited access to effective TB treatment
and curing them. Expanding innovative approaches
such as linking the public and private sectors
in the treatment and referral of such cases
will be critical in reducing TB deaths among
the poor.
The Impact Of Tb
On Women And Children
TB is a leading cause of death among women
of reproductive age. One of the reasons
for this is that women are less likely than
men to be tested and treated for TB. In
addition, as greater numbers of women become
infected with HIV, more are also becoming
sick with TB. Over 250 000 children die
every year of TB. Children are particularly
vulnerable to TB infection because of frequent
household contact. Children also suffer
when their parents are infected. Every year
in India alone, more than 300 000 children
leave school on account of their parents’
TB.
The Socioeconomic
Impact
Because TB typically affects the most productive
and economically active segments of the
population, the impact of illness on communities
and households is very high. TB costs borne
by the patient often exceed costs to the
health ministry.
The socioeconomic burden
of TB is frequently discussed in terms of
the direct and indirect costs to households.
These costs are higher for TB than most
other diseases due to the length of the
treatment period (six to eight months).
Direct costs include paying for visits to
clinics, tests and drugs. In addition, TB
imposes high non-medical costs, such as
the cost of additional nourishing foods
and transport to and from clinics. The indirect
costs of a long illness are also devastating
for poor households. These include lost
household income and production (such as
food), adverse impacts on the health and
education of family members (withdrawal
of children from school) and the costs of
sub-optimal land use.
More than 75% of TB-related disease
and death occurs among people between
the ages of 15 to 54, the most economically
active segment of the population.
TB is estimated to deplete the incomes
of the world's poorest communities by
a total of US$ 12billion per year.
The potential cost of lost productivity
due to TB is in the order of 4 to 7% of
GDP.
The average TB patient loses three
to four months of work time as a result
of being sick; loss of household earnings
ranges from 30 to 100%.
Mean household spending on TB amounts
to 8- 20% of the annual household income,
varying by region.
In developing countries
with few government safety nets, diseases
like TB have a devastating impact on poor
households which must resort to various
coping strategies. Some of these strategies
include reducing the quality and quantity
of food in order to save money, selling
assets, taking out loans and withdrawing
children from school. Many of these strategies
undermine the household’s long-term
sustainability and ability to survive future
shocks.
The
Global Plan to Stop Tuberculosis is a comprehensive
assessment of the action and resources needed
to expand, adapt and improve the globally
recommended strategy for TB control. The
First Global Plan to Stop TB (2000-2005)
described mechanisms, activities and resources
needed to accelerate progress towards 2005
targets and plans of action of the Stop
TB working groups. The Second Global Plan
to Stop TB (2006-2015) features a 10 years'
timeframe, responds to country needs for
long-term planning and financial sustainability
and is consistent with the proposed World
Health Assembly resolution in 2005 calling
for a Global Plan. The Global Plan provides
a roadmap for achieving the Stop TB Partnership's
global TB control targets for 2015 (that
are linked to the Millennium Development
Goals), i.e. to halve TB prevalence and
deaths by 2015 in comparison with 1990.
These targets represent progress towards
the goal to eliminate TB as a global public
health problem by 2050.
The Stop TB Partnership
Secretariat is pleased to use this website
as a tool to update its partners on its
progress. All questions or suggestions related
to the overall Global Plan can be emailed
to globalplan@stoptb.org
Meeting
of the Steering Committee for the Global
Plan to Stop TB (2006-2015)
2 May 2005 - Addis Ababa, Ethiopia
The Coordinating Board has established a
Steering Committee that provided useful
guidance concerning the finalization of
the 7 Working Groups (WG) Plans and the
overall Global Plan. The Steering Committee
reviewed each draft WG strategic plan and
regional scenario; considered issues relating
to the overall Plan, including the Plan’s
vision, timetable, and processes; and agreed
the next steps in developing the Plan. The
Stop TB Coordinating Board at its meeting
session on 4 May 2005 noted the Steering
Committee’s decisions and considered
its recommendations. (Point 5 - Part 2 of
report below).
Finalised WG plans are
due by the end of May 2005. In addition
to consultation through the WGs, the Secretariat
will organise an extensive review process
in August-September 2005.
The Stop TB Coordinating
Board endorsed the proposal of the World
Economic Forum to launch the Global Plan
during its Annual Meeting at Davos from
25-29 January 2006.
The table below provides
a summary timetable for producing the Global
Plan. A more detailed timetable is attached
at Annex 2 of the Steering Committee meeting
report.
Global Plan to Stop TB
(2006-2015): summary revised timetable
Date
Milestone
2 May
Global Plan Steering Committee
meeting
4 May
Coordinating
Board consideration of Global Plan
issues
End May
Finalised WG plans and
regional scenarios
June - July
Drafting of first full
Global Plan
August - September
Wide consultation and
review
End September
Finalised Global Plan
October -
December
Development
of advocacy materials.Production of
Global Plan (editing, design, translation,
printing etc)
Late January
2006
Launch
of Plan at the World Economic Forum
Annual Meeting, Davos, 25-29 January
2006
Update on Global
Plan to Stop TB 2006-2015
The Stop TB Partnership secretariat is coordinating
the development of the Second Global Plan
to Stop TB (2006-2015), under the guidance
of the Steering Committee.* The Plan represents
a roadmap for TB control over the next decade
(2006-2015), in working towards the goal
to eliminate TB as a global public health
problem by 2050. Work started in May 2004
with building consensus among Stop TB partners
on the outline of the Plan. The Plan will
set out the action needed to reach the 2015
global targets for TB control, which are
part of the United Nations (UN) Millennium
Development Goals (MDGs). The global target
is to halve TB prevalence and deaths by
2015 in comparison with 1990.
The development of a strategic
plan (2006-2015) by each Working Group (WG)
is crucial to the successful development
and subsequent implementation of the Global
Plan. The WGs have much to gain from the
successful development of a global plan
with wide support. At its meeting in Beijing
in October 2004, the Coordinating Board
requested each WG to develop its own strategic
plan (2006-2015) in contribution to the
overall Global Plan. The WG chairpersons
and secretaries met in Beijing on 16 October
2004 straight after the Coordinating Board
meeting to discuss the planning process
for the WGs' contributions to the Global
Plan. For each WG this involves planning
the activities (ultimately with timelines
and milestones) necessary to contribute
to achieving the 2015 global TB control
targets, with the accompanying costs.
The initial step in the
planning process is to construct possible
scenarios which consider how the activities
of the seven WGs could, separately and together,
contribute to reaching the targets in 2015.
It is necessary to consider how the regions
individually and the world overall can reach
the 2015 global TB control targets. This
work on epidemiological and costing projections
will provide each WG with the basis for
developing its strategic workplan in contribution
to achieving the 2015 global targets. This
planning process requires close interaction
between the representatives of the seven
WGs and the team assessing the epidemiological
impact of the currently available and new
tools.
At a planning workshop
in Montreux, Switzerland (28 February to
4 March 2005), WG focal points (identified
by each WG chairpersons and secretary) and
the team assessing epidemiological impact
will present and refine scenarios representing
how the activities of each WG could contribute
to global TB control. Developing the scenarios
will build on work already done by some
WGs in modelling the expected impact of
their activities.
The Steering Committee
will meet in April 2005 to review progress
in developing the WGs' strategic plans in
contribution to the Global Plan. The Coordinating
Board's target date for the Global Plan's
launch is the end of 2005. Successful development
and implementation of the WG strategic plans
depends on the involvement of a wide range
of members of each WG. Table 1 shows the
chairpersons and secretaries of the seven
WGs who you should contact to indicate your
interest. Please contact Dermot Maher (maherd@who.ch)
regarding the overall Global Plan.
*Olusoji Adeyi (USA), Faruque
Ahmed (Bangladesh), Nils Billo (France),
Jaap Broekmans (Netherlands), Ken Castro
(USA), Marcos Espinal (Switzerland), Maria
Freire (USA), Phil Hopewell (USA), PR Narayanan
(India), Francis Omaswa (Uganda), Mario
Raviglione (Switzerland), Karam Shah (Pakistan),
Roberto Tapia (Mexico), Irene Koek (USA),
Edugie Abebe (Nigeria)
Table 1. Chairpersons
and secretaries of the Working Groups
Working Group
Secretary
Chairperson
DOTS Expansion
Léopold Blanc
Karam Shah
TB/HIV
Paul Nunn
Gijs Elzinga
DOTS-Plus
Kitty Lambregts
Kai Vink
New drugs
Barbara Laughon
Maria Freire
New diagnostics
Jane Cunningham
Giorgio Roscigno
New vaccines
Uli Fruth
Douglas Young
Advocacy and
Communication
Michael Luhan
Joanne Carter
The Plan sets out actions for life - actions towards a world free of TB
PART I: Strategic Directions
Achievements in 2000 - 2005 and Challenges for 2006 - 2015
This section provides a brief description of the Partnership's structure and function, outlines the main achievements in global TB control since 2000, describes the current TB situation today, and sets out the challenges that lie ahead.
Achieving the Targets: What Needs to be Done
In setting out the main strategic directions to achieve global targets for TB control, this section indicates the following:
the Partnership's vision, mission, and targets
the Partnership's strategic directions and objectives
the ways in which wider and wiser use may be made of existing strategies for TB control
strategies to address the challenges posed by emerging threats such as MDR-TB and HIV
the importance of operational research
the ways in which new TB diagnostic tests, drugs, and vaccines will be developed and adopted
the importance of technical cooperation in support of the implementation of effective TB control interventions
the main approaches to monitoring and evaluation
Key Cross-Cutting Issues: Strengthening Health Systems, TB and Poverty, TB in Children, and TB and Gender
As the Partnership’s working groups take forward their individual strategic plans for 2006 - 2015, they will work within the overall holistic vision of the Global Plan to Stop TB. To do this, the Working Groups have to work together effectively and efficiently, and to take a common approach to key cross-cutting issues. This section addresses four such issues important to the Global Plan: health system strengthening, poverty, TB in children, and TB and gender.
Summary of Planned Achievements, Resource Needs and Impact
This section summarizes:
what would be achieved if the Plan is fully implemented
the resource needs to enable full implementation of the Plan
the expected impact of full implementation of the Plan on the TB epidemic
PART II:GLOBAL & REGIONAL SCENARIOS FOR TB CONTROL 2006 - 2015
South-East
Asia accounts for nearly 40% of all
tuberculosis cases
South East Asia accounts for approximately
40% – two out of five –
cases of tuberculosis in the world.
Within South-East Asia, more than 95%
of cases are found in India, Indonesia,
Bangladesh, Thailand, and Myanmar.
Source: Global Tuberculosis Control:
WHO Report 1999 (WHO/TB/99.259)
TB is the leading single infectious
cause of death in South-East Asia
TB
is the leading infectious cause of death
among people more than 5 years of age
in South-East Asia. In fact, it is projected
that although morality from many other
infectious diseases will continue to
decrease over the next 20 years, TB
will remain one of the 10 leading causes
of death unless urgent action is taken.
Source: World Health Report, 1999.
World
Health Organization - Global Tuberculosis Control.
Source:
WHO Report 2001. Geneva, Switzerland.
During
2000, a standard data collection form was
sent to 211 countries via WHO Regional Offices.
The form has three sections which request
information about: policy and practice in
TB control; the number and types of TB cases
notified in 1999; and the outcomes of treatment
and retreatment (DOTS areas only) for smear-positive
or culture-positive (mainly Europe) cases
registered in 1998.
The main findings were:
There were an estimated 8.4 million
new tuberculosis cases in 1999, up from
8.0 million in 1997; the rise is due
largely to a 20% increase in incidence
in African countries most affected by
the epidemic of HIV/AIDS. If present
trends continue, 10.2 million new cases
are expected in 2005, and Africa will
have more cases than any other WHO Region.
Following a decade of successful
control, and the consequent reduction
in incidence, Peru fell to bottom place
in the league of high-burden countries
in 1999. It was eliminated from TB80
during 2000.
The number of countries implementing
the DOTS strategy (at least in part)
increased by 8 during 1999, bringing
the total to 127 (out of 211).
The fraction of the world's population
that had access, in principle, to DOTS
increased slightly from 43% in 1998
to 45% in 1999.
Roughly one quarter (23%) of estimated
new smear-positive cases were reported
to DOTS programmes in 1999, as compared
with 22% in 1998; this is consistent
with the average increment of about
120 000 cases in each year since 1994.
If this trend is maintained, the
target of 70% case detection under DOTS
will not be reached until 2013; to get
to the target by 2005, DOTS programmes
must collectively recruit at least 300
000 additional smear-positive cases
each year.
There was an insignificant increase
between 1998 and 1999 in the total number
of smear positive cases reported to
WHO; about 1.4 million cases were reported
in both years (41% of the estimated
total).
Almost all (92%) of the progress
in DOTS expansion, as judged by smear-positive
case notifications, was made in just
5 countries; 65% of these additional
cases were found in 2 countries, India
and South Africa.
Treatment success of new smear-positive
patients has remained high under DOTS,
and exceeded 80% in the most recent
cohort (1998).
Against expectation, the cure rate
measured by sputum smear conversion
in 12 European countries was not consistently
higher than the cure rate measured by
culture conversion; in order to explain
this result, treatment outcomes must
be examined for patients individually,
rather than in aggregate.
In 1999, Peru and Viet Nam were still
the only high-burden countries to have
exceeded both WHO targets of 70% case
detection and 85% treatment success.
However, several other TB80 countries
are within reach: they include Brazil,
Cambodia, Kenya, the Philippines, South
Africa and Tanzania.
A number of smaller countries appear
to have declining TB incidence rates
that are linked to high rates of case
detection and cure; these include Cuba,
Lebanon, the Maldives, Nicaragua, Oman
and Uruguay.
During the preparation of this report,
China announced preliminary results
of a nationwide survey suggesting a
comparatively large reduction in TB
prevalence in 13 provinces that have
participated in the IEDC TB control
project since 1990.
Estimated
Incidence rates of HIV-positiveTB,
1999
Conclusion
Progress in global TB control has remained
steady, but slow. Despite large numbers
of patients recruited in India and South
Africa during 1999, DOTS implementation
overall was no faster than in previous years.
DOTS programmes worldwide will have to increase
the number of additional patients enrolled
annually by a factor of 2.5 in order to
meet 2005 targets. Following the impact
of short-course chemotherapy in Peru (reduced
incidence) and China (reduced prevalence),
detailed epidemiological analyses are needed
to find out whether other control programmes
with high rates of case detection and cure
have also succeeded in reducing TB burden.
Copies
of Global Tuberculosis Control are available
from:
Communicable Diseases
World Health Organization
20 Avenue Appia
CH-1211 Geneva 27
Switzerland
Table
1. Categorization of countries Category Definition
0
Countries
not reporting to WHO.
1
Countries
not
implementing the DOTS strategy and
having an estimated incidence rate
of 10 or
more cases per 100 000 population.
2
Countries
implementing the DOTS strategy in
less than 10% of the total population
(pilot phase).
3
Countries
implementing the DOTS strategy in
10 to 90% of the total population
(expansion
phase).
4
Countries
implementing the DOTS strategy in
over 90% of the total population
(routine
implementation).
5
Countries
not implementing the DOTS strategy
but having an estimated incidence
rate of less
than 10 cases per 100 000 population
(low incidence).
Results
Global and regional progress in TB control
Countries reporting to WHO
By 22 January 2001, 171 (81%) of 211 countries
reported case notifications for 1999 and/or
treatment outcomes for patients registered
in 1998, 18 fewer than last year. We received
reports from all high-burden countries except
Mozambique, all countries with more than
30 million people except Canada, and all
other countries with more than 10 million
people except Yemen, Madagascar and Niger
(Tables 5a and 5b).
Table
5a. List
of countries implementing DOTS, 1999
Table
5b.List
of countries not implementing DOTS
or not reporting to WHO, 1999
By the end of 1999, 82%
of the world's population was living in
countries that had adopted DOTS (categories
2-4). Reported DOTS population coverage
was greatest in the American (62%), Western
Pacific (57%) and African Regions (55%)
(Figure 6). Table 6 tabulates DOTS coverage
for each high-burden country, and for the
whole world, from 1995 to 1999. Seventeen
countries implemented DOTS for the first
time in 1999 (Table 5a). Three had achieved
limited coverage (< 10%, Category 2),
DPR Korea, Lithuania and Tajikistan. Five
achieved moderate coverage (10-90%, Category
3), including China Hong Kong SAR, Costa
Rica, Mauritania and Saudi Arabia. The remaining
nine reached high coverage (> 90%), including
Libya and Tunisia. Among the four countries
that moved up to category 3 in 1999 were
Haiti, India and Poland. Bolivia, Iran and
Kazakhstan were the biggest of six countries
that reached full coverage (category 4).
Sixteen countries that had implemented DOTS
by 1998 failed to provide data for 1999,
including Mozambique, Madagascar and Niger
(Table 5b).
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Fund’s Monthly Progress Report
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It also describes how financed programs
are expected to change the course of the
AIDS, TB and Malaria pandemics locally.
Click
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