Global Tuberculosis Control 2010 - Florida Department of Health

Myanmar (45%), Kenya (46%) and Ethiopia (46%). A
comparatively high proportion of notified cases were
sputum smear-positive in Bangladesh (81%), the Democratic
Republic of the Congo (85%) and Viet Nam (73%).
Globally, the rate of treatment success for new sputum
smear-positive cases of pulmonary TB who were treated
in the 2008 cohort was 86% (). This is the second
successive year that the target of 85% (first set in
1991) has been exceeded globally. Of the 22 HBCs, 13
reached the 85% target. This included Kenya and the
United Republic of Tanzania, demonstrating that countries
in which there is a high prevalence of HIV among
TB patients are able to achieve this target. Among WHO
regions, three met or exceeded the 85% target: the Eastern
Mediterranean Region, the South-East Asia Region
and the Western Pacific Region. The treatment success
rate was 80% in the African Region, 77% in the Region
of the Americas and 66% in the European Region (where
death and failure rates are comparatively high). Efforts
to increase treatment success rates are warranted in
these regions, especially the European Region.
The case detection rate (CDR) 1 has been a much-used
indicator of national progress in TB control since the
mid-1990s. For a given country, it is calculated as the
number of notified cases of TB in one year divided by the
number of estimated incident cases of TB in the same
year, and expressed as a percentage. The considerable
attention given to the CDR was in line with the two principal
global targets (case detection and treatment success
rates) set for TB control during the period 1991 to
2005. The targets of reaching a CDR of ≥70% and a treat-
1
The CDR is actually a ratio rather than a rate, but the term “rate”
has become standard terminology in this context of this indicator.