Surveillance of antituberculosis drug resistance among children from the Western Cape Province of South Africa--an upward trend.

Abstract:

OBJECTIVES:We assessed the prevalence of antituberculosis drug resistance among children with tuberculosis (TB) in the Western Cape Province of South Africa. METHODS:Drug susceptibility testing for isoniazid and rifampin was prospectively done on all children with culture-confirmed TB at Tygerberg Children's Hospital, Cape Town, from March 2005 through February 2007. Survey results were compared with results from 2 previous surveys. RESULTS:We found 291 children had culture-confirmed TB. Resistance to isoniazid or rifampin increased from 21 of 306 (6.9%) to 41 of 319 (12.9%) and 43 of 285 (15.1%) in the first to third surveys (P = .005) and multidrug resistance from 7 of 306 (2.3%) to 18 of 319 (5.6%) and 19 of 285 (6.7%; P = .033). Although previously treated children had significantly more drug resistance than did new TB cases (19 of 66 [28.8%] vs 24 of 225 [10.7%]; odds ratio = 3.39; 95% confidence interval = 1.62, 7.05), evidence suggests transmission rather than acquisition of resistance. HIV infection was not significantly associated with drug resistance. CONCLUSIONS:Results indicate a high and rising prevalence of anti-TB drug resistance among children in the Western Cape, which suggests ongoing transmission of drug-resistant strains within the community. Improved control of TB in adults, including early identification and treatment of drug-resistant cases, is necessary to reduce transmission to children.

journal_name

Am J Public Health

authors

Schaaf HS,Marais BJ,Hesseling AC,Brittle W,Donald PR

doi

10.2105/AJPH.2008.143271

subject

Has Abstract

pub_date

2009-08-01 00:00:00

pages

1486-90

issue

8

eissn

0090-0036

issn

1541-0048

pii

AJPH.2008.143271

journal_volume

99

pub_type

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