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. 2002 Nov;8(11):1280-4.
doi: 10.3201/eid0811.020306.

Skin-test screening and tuberculosis transmission among the homeless

Po-Marn Kong  1 , Jan Tapy, Patricia Calixto, William J Burman, Randall R Reves, Zhenhua Yang, M Donald Cave
Affiliations

Skin-test screening and tuberculosis transmission among the homeless

Po-Marn Kong et al. Emerg Infect Dis. 2002 Nov.

Abstract

We describe the implementation of a mandatory tuberculosis (TB) screening program that uses symptom screening and tuberculin skin testing in homeless shelters. We used the results of DNA fingerprinting of Mycobacterium tuberculosis isolates to evaluate the effect of the program on TB incidence and transmission. After the program was implemented, the proportion of cases among homeless persons detected by screening activities increased, and the estimated TB incidence decreased from 510 to 121 cases per 100000 population per year. Recent transmission, defined by DNA fingerprinting analysis as clustered patterns occurring within 2 years, decreased from 49% to 14% (p=0.03). Our results suggest that the shelter-based screening program decreased the incidence of TB by decreasing its transmission among the homeless.

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