WHO Global Task Force on TB Impact Measurement
What are the 21 global focus countries where surveys of the prevalence of TB disease are recommended and how were they selected?
The 21 global focus countries identified by the Task Force in December 2007 (for further details see the meeting report) are:
In the African region: Ghana, Kenya, Malawi, Mali, Mozambique, Nigeria, Rwanda, Sierra Leone, South Africa, Uganda, the United Republic of Tanzania, and Zambia.
In the Eastern Mediterranean region: Pakistan
In the South East Asian region: Bangladesh, Indonesia, Myanmar and Thailand
In the Western Pacific region: Cambodia, China, the Philippines and Viet Nam
These countries were selected based on primarily epidemiological criteria: a high estimated prevalence rate (at least 75 cases of smear-positive TB per 100,000 population) and a substantial share of the regional burden of TB. Other criteria included the implementation of a national survey between around 2000 and 2007 (mostly relevant to countries in the Western Pacific Region), which meant that baseline data were already available to allow measurement of trends; and the existence of plans and funding to implement surveys between 2008 and 2015.
From 2009, two additional countries that met the Task Force's criteria for implementing a prevalence survey have also been considered as global focus countries: Ethiopia and Togo. They may officially replace Mozambique and Sierra Leone in the list, since it appears unlikely that surveys will be possible in these two countries.