The number of tuberculosis (TB) cases detected in a given year.
The term "case detection", as used here, means that TB is diagnosed in a patient and is reported within the national surveillance system, and then on to WHO.
From 2013 onwards, the number of cases are reported to WHO in the following categories:
New pulmonary bacteriologically confirmed TB cases
New pulmonary clinically diagnosed TB cases
New extrapulmonary TB cases, bateriologically confirmed or clinically diagnosed
Relapse pulmonary bacteriologically confirmed TB cases
Relapse pulmonary clinically diagnosed TB cases
Relapse extrapulmonary TB case, bacteriologically confirmed or clinically diagnosed
previously treated cases, excluding relapse cases, bacteriologically confirmed or clinically diagnosed.
Note that 'New' in the first three categories above also includes cases with unknown previous TB treatment history.
For full definitions of the categories above see 'Definitions and reporting frmework - 2013 revision'
Prior to 2013, the number of cases were reported in the following categories:
New TB case: pulmonary smear-positive
New TB case: pulmonary smear-negative
New TB case: pulmonary smear unknown/not done
New TB case: extrapulmonary
New TB case: other
Retreatment TB case: relapse (pulmonary smear and/or culture positive)
Retreatment TB case: treatment after failure (pulmonary smear and/or culture positive)
Retreatment TB case: treatment after default (pulmonary smear and/or culture positive)
Retreatment TB case: other
Other TB cases (treatment history unknown
For more details on the pre-2013 case definitions see Treatment of Tuberculosis: guidelines for national programmes
Method of measurement
The number of cases detected by national TB control programmes is collected as part of routine surveillance.
Annual case notifications are reported annually by countries to WHO using a web-based data collection system. See the WHO global tuberculosis control report.
The TB case notifications reported by countries follow the WHO recommendations on case definitions and recording and reporting; they are internationally comparable and there is no need for any adjustment.
M&E Framework:
Impact
Method of estimation:
Reported by countries.
Preferred data sources:
Surveillance systems; All references to Kosovo should be understood to be in the context of the United Nations Security Council resolution 1244 (1999)
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