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Eurosurveillance > Eurosurveillance Weekly archives 2004 > Volume 8 / Issue 12
  1. World TB Day 2004 and current TB perspectives in Europe: an update from EuroTB
  2. WHO global report on antituberculosis drug resistance: Eastern Europe and Central Asia key areas
  3. First large outbreak of multidrug resistant tuberculosis in the Netherlands reported

World TB Day 2004 and current TB perspectives in Europe: an update from EuroTB 

Dennis Falzon (eurotb@invs.sante.fr) and Andrea Infuso, EuroTB, Institut de veille sanitaire, Saint-Maurice, France.
Tuberculosis (TB) remains a leading cause of illness in the world and the second most common cause of death from infectious disease. It is also the most common AIDS defining illness in Europe (1). Increasing public awareness of TB and the need for its control are suggested themes for this year’s World TB Day, to be commemorated on Wednesday 24 March (http://www.stoptb.org/events/world_tb_day/2004). While infections such as SARS and influenza have dominated the popular media in recent years, owing to their novelty and ‘explosive’ nature, TB continues to pose a serious threat, and over 65 000 TB cases (of which 76% were new) were notified in 2002, in the 25 countries of the enlarged European Union (EU) (Figure 1).

Figures 1 and 2. Tuberculosis notification rates, 1985-2002, European Union. Source: EuroTB.

Figure 1. European Union mean, before and after 2004 enlargement*

*Old EU: Austria, Belgium, Denmark, Finland, France, Germany, Ireland, Italy, Luxembourg, Netherlands, Portugal, Spain, Sweden and United Kingdom. Greece excluded owing to lack of data for 1993-94. 10 New EU countries: as listed in Figure 2. EU 2004: both groups together. 2002 data provisional.
 

Figure 2. Reported TB incidence in the 10 new EU countries

The decline in TB incidence observed until the early 1990s has stopped or even reversed in a number of countries in the EU (Figure 2), whereas the proportion of TB cases in migrants from high prevalence countries is increasing. In most of the 10 countries joining the EU this year, TB incidence is higher than the mean of the enlarged EU. In the Baltic states, incidence is five times greater, and there is a very high frequency of multidrug resistant TB (2), reflecting a widespread problem throughout the former Soviet Union (FSU), where TB medication programmes have been inadequate for many years. The borders between the EU and high incidence countries such as Russia (109 notifications per 100 000 in 2002) and Ukraine (83 per 100 000) will now be much longer, and the movement of people across them is expected to increase. In the FSU, the transmission of HIV is expected to fuel future incidence and drug resistance, a major threat for the rest of Europe warranting close monitoring and targeted interventions. Additionally, the target for treatment success is still not met in many European countries (Table), and the World Health Organization estimates that the European region has the lowest case detection rates worldwide (3).

Table. Summary tuberculosis surveillance data, Europe. Source: EuroTB.
 
  EU + West   0 Other     Total  
  Countries     Countries     Countries  
 Total population  32  472.3 million   20  404.9   52 877.2 million
TB case notification, 2002*                
Total number of cases  32 66 893   20 359 065   52 425 958
Notification rate per 100 000 32 14.1   19 89.6   52 48.8
Mean annual change in notification rate, 1995-2002 31 -3.5%   18 7.2%   49 3.5%
Foreign origin 31 29.0%   15 0.2%   46 8.7%
Surveillance of drug resistance, 2001II                
Isoniazid resistance, new cases 22  5.1%   2 -  24 4.7%
Multidrug resistance, new cases 22 0.9%   2 -  24 0.8% 
Treatment outcome monitoring, 2000 ††                
Treatment success, new pulmonary sputum smear positive cases  18 72%   8 80%   26 75.0%
Treatment success, retreated pulmonary sputum smear positive cases  16 62%   8 67%   24 66.0%

EU+West includes the 25 EU countries (2004) as well as Andorra, Iceland, Israel, Monaco, Norway, San Marino and Switzerland. Other includes the 12 remaining states of the former Soviet Union, as well as Albania, Bosnia & Herzegovina, Bulgaria, Croatia, Macedonia, Romania, Serbia & Montenegro and Turkey
* Data for 2002 are provisional
II Data for countries with representative, nationwide data; percents refer to median of country range
Data only available for Croatia and Bosnia & Herzegovina – not indicative of group of countries
††Data for countries with nationwide data, including >85% cases reported.

Surveillance of TB in Europe has been supported by European Commission (EC) through the funding of EuroTB between 1996-2003. EuroTB has been instrumental in increasing the contribution of surveillance to the control of TB in Europe through promoting a standardised approach to collection and analysis of data on incidence, drug resistance and treatment outcome. Its publications (available at http://www.eurotb.org/) represent an increasingly recognised and authoritative source of information.

From 2005, European monitoring of serious health threats such as TB will become the task of the newly established the European Centre for Disease Prevention and Control (ECDC) (4). EuroTB has received no funding from the EC since the start of 2004, and its work is destined to come to an end before the ECDC comes into being. Should the networking and experience accumulated by EuroTB over the past seven years be lost, it will be a setback that the European public can ill afford while TB remains a serious threat to human health in Europe.

References:
  1. European Centre for the Epidemiological Monitoring of AIDS (EuroHIV). HIV/AIDS Surveillance in Europe. End-year report 2002. no. 68. (http://www.eurohiv.org/). Saint-Maurice: InVS; 2003.
  2. EuroTB (InVS/KNCV) and the national coordinators for tuberculosis surveillance in the WHO European Region. Surveillance of tuberculosis in Europe. Report on tuberculosis cases notified in 2001 Saint-Maurice: InVS; December 2003. (http://www.eurotb.org/).
  3. World Health Organization. DOTS Expansion Plan to Stop TB in the WHO European Region 2002-2006. Copenhagen: WHO Regional Office for Europe; 2002. (http://www.who.dk/document/e77477.pdf)
  4. European Commission. Proposal for a regulation of the European Parliament and of the Council Establishing a European Centre [for Disease Prevention and Control] (presented by the Commission). 2003/0174 (COD). Brussels: European Commission; 16 September 2003 (replaces version of 8 August 2003) (http://europa.eu.int/eur-lex/en/com/pdf/2003/com2003_0441en01.pdf) .




 

WHO global report on antituberculosis drug resistance: Eastern Europe and Central Asia key areas 

Editorial team (eurosurveillance.weekly@hpa.org.uk), Eurosurveillance editorial office
The prevalence of multidrug resistant TB is exceptionally high in all the former countries of the Soviet Union surveyed by the World Health Organization (WHO), including Estonia, Latvia and Lithuania. The latest WHO report on tuberculosis, Anti-Tuberculosis Drug Resistance in the World - Third Global Report (available at http://www.who.int/gtb/publications/drugresistance/2004/index.htm),
has confirmed geographical concentration of TB drug resistance in 10 global hotspots, which also include Kazakhstan, Uzbekistan, parts of Russia, as well as Israel, Ecuador and parts of China (1). Drug resistance prevalence in new patients was found to be as high as 14% in Central Asia (Kazakhstan) and 12% in Europe (Estonia).

Two previous WHO reports published in 1997 and 2000 (2,3) had already concluded that drug resistant TB was present in all settings surveyed, and multidrug resistance (MDR) in most, while good TB control practices were associated with lower or decreasing levels of resistance.

At a press conference in London, the Director of WHO’s Stop TB campaign (http://www.stoptb.org/) stressed the urgency of the situation for countries in the former Soviet Union and called for increased investment in TB prevention programmes. DOTS, the internationally agreed TB treatment strategy (http://www.who.int/gtb/dots/index.htm), is, according to WHO, the most effective strategy to prevent emergence of drug resistance, and needs to be fully adopted.

In countries where there are existing cases of MDR resistance, it is recommended that the DOTS-plus strategy is implemented through the Green Light Committee (http://www.who.int/gtb/policyrd/DOTSplus.htm). Investment in treatment programmes and surveillance needs to be strengthened, particularly in areas with a high prevalence of MDR TB, which is difficult and expensive to treat and has a high mortality.

The WHO 2004 Global TB Control Report will be released on World TB Day, 24 March, also the first day of the 2nd Stop TB Partners’ Forum in New Delhi (details available at http://www.stoptb.org/).

References:
  1. The WHO/IUATLD Global Project on Anti-Tuberculosis Drug Resistance Surveillance. Anti-Tuberculosis Drug Resistance in the World - Third Global Report. Geneva: World Health Organization; 2004. (http://www.who.int/gtb/publications/drugresistance/2004/index.htm)
  2. The WHO/IUATLD Global Project on Anti-Tuberculosis Drug Resistance Surveillance. Anti-Tuberculosis Drug Resistance in the World. The WHO/IUATLD Global Project on Anti-tuberculosis Drug Resistance Surveillance 1994- 1997. Geneva: World Health Organization; 1997. (http://www.who.int/gtb/publications/dritw/index.htm)
  3. The WHO/IUATLD Global Project on Anti-Tuberculosis Drug Resistance Surveillance. Anti-Tuberculosis Drug Resistance in the World - Report No.2, Prevalence and Trends. Geneva: World Health Organization; 2000. (http://www.who.int/gtb/publications/drugresistance/index.htm)




 

First large outbreak of multidrug resistant tuberculosis in the Netherlands reported 

Editorial team (eurosurveillance.weekly@hpa.org.uk), Eurosurveillance editorial office
The first large outbreak of multidrug resistant tuberculosis (MDR TB) in the Netherlands has been reported (1). According to a press release from the KNCV Tuberculosefonds (KNCV Tuberculosis Foundation, http://www.tuberculose.nl/), a tuberculosis patient from eastern European is known to have infected six Dutch nationals, two of whom have developed pulmonary tuberculosis. Although new cases cannot yet be ruled out, the outbreak is under control thanks to swift action taken by the regional municipal health services concerned. The primary case’s country of origin has not yet been made public.

The KNCV Tuberculosis Foundation and the GGD Nederland (Dutch Association of Municipal Health Services, http://www.ggd.nl/) have previously called for TB control in the Netherlands to be strengthened, and for attention to be given to establishing quality TB control in eastern Europe.

Adapted and summarised from reference 1.

References:
  1. KNCV Tuberculosis Foundation. First Large Outbreak of Multidrug-Resistant Tuberculosis in the Netherlands. Press release, 16 March 2004. (http://www.tuberculose.nl/) [Dutch language version only available on website, 18 March 2004]

 
 

 

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