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Field Detail
Theme Health
Code PH-CD-1.4
MDG code MDG-6.10.1
Sub-theme Communicable Diseases (TB)
Name TB case detection rate (all forms of TB in given year) (MDG 6.10.1)
Definition The tuberculosis (TB) detection rate is the percentage of estimated new infectious tuberculosis cases detected under the internationally recommended tuberculosis control strategy directly observed treatment short course (DOTS). 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 to WHO. Smear-positive is defined as a case of TB where Mycobacterium tuberculosis bacilli are visible in the patient's sputum when examined under the microscope. A new case of TB is defined as a patient who has never received treatment for TB, or who has taken anti-TB drugs for less than 1 month.
Calculation/Formula "The DOTS detection rate for new smear-positive cases is calculated by dividing the number of new smear-positive cases treated in DOTS programmes and notified to WHO divided by the estimated number of incident smear-positive cases for the same year, expressed as a percentage."
Assumptions Sputum smear-positive cases are the focus of this indicator because they are the principal sources of infection to others, because sputum smear microscopy is a highly specific (if somewhat insensitive) method of diagnosis, and because patients with smear-positive disease typically suffer higher rates of morbidity and mortality than smear-negative patients. However, national TB control programmes should aim to provide treatment to all patients, as set out in the Stop TB Strategy
Purpose/Rationale To reduce TB related morbidity, achieve Stop TB Partnership targets and contribute towards the achievement of the Millennium Development Goals. Rationale: This indicator measures the Directly Observed Treatment Short-course (DOTS) programs ability to detect and identify smear positive TB patients. If a country has low case detection, it may reflect incomplete reporting, limited coverage or utilization of facilities that provide DOTS or insufficient referral of TB suspects for diagnosis. Internationally recommended outcome indicator, with international and regional targets; Internationally target is to detect at least 70% of new sputum smear positive TB cases; Regional target is to move beyond 70% case detection
Policy Linkages Stop TB Strategy, Strategic Plan to Stop TB in the Western Pacific, Global Fund Program
Preferred Data Sources WHO Annual Tuberculosis Control Report. Numerator is based on national notification data and WHO estimates for denominator to maintain regional consistency.
Primary Data Collection System National Administrative Database - Health Information Management Systems (HIS)
Frequency of Data Collection Annual
Other agencies countries_ must report to: CHIPS, Global Fund
SPC Responsibility - Data Management PHD
SPC Programme PHD
Numerator The number of new smear-positive cases detected by DOTS programmes is collected as part of the routine surveillance (recording and reporting) that is an essential component of DOTS. Quarterly reports of the number of TB cases registered are compiled and s
Other Metadata Link http://mdgs.un.org/unsd/mdg/Metadata.aspx