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Title: Annual risk of tuberculosis infection in West Sumatra Province, Indonesia
Authors: Bahtiar, A
Miko, TY
Machmud, R
Basri, C
Mehta, F
Chadha, VK
Loprang, F
Manissero, D
Palupi, KR
Jitendra, R
Issue Date: Oct-2008
Citation: International Journal of Tuberculosis and Lung Disease. 2008 ; 12(3) : 255-261
Language: en
Type: Article
Abstract: OBJECTIVE: To estimate the annual risk of tuberculosis infection (ARTI) among children attending elementary school Classes I-III in West Sumatra Province, Indonesia. METHODS: The survey was designed to estimate ARTI among children, irrespective of BCG scar status. Fieldwork was carried out in 72 schools selected by two-stage sampling. Children were administered 2 TU of purified protein derivative RT23 with Tween 80 intradermally on the mid-anterior aspect of the left forearm. The maximum transverse diameter of induration was measured at about 72 h. Analysis was carried out among 5653 satisfactorily test-read children aged 6-9 years. RESULTS: The estimation by mirror-image method among all children (without and with BCG scar) revealed an ARTI of between 1% and 1.3%. The estimated ARTIs among children without and with BCG scar varied between 0.8-1.3% and 0.9-1.4%, respectively, using the mirror-image method, anti-mode method and mixture model. CONCLUSION: Tuberculosis control efforts need to be intensified to reduce the risk of transmission of infection.
MeSH: Tuberculosis
Keywords: Tuberculosis
Tuberculin survey
Annual risk
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