Conventional and molecular epidemiology of macrolide resistance among new Mycobacterium avium complex isolates recovered from HIV-infected patients.

Gardner, Edward M; Burman, William J; DeGroote, Mary Ann; Hildred, Ginger; Pace, Norman R · Clin Infect Dis · 2005

retrospective_cohort · Level III

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Abstract

We performed a retrospective cohort study of human immunodeficiency virus (HIV)-associated Mycobacterium avium complex (MAC) infection during 1997-2004 to assess for factors associated with initial macrolide resistance. Of 52 HIV-associated sterile-site MAC isolates, 9 (17%) were initially macrolide resistant. Prior MAC treatment and prolonged MAC prophylaxis with macrolides were associated with infection with a macrolide-resistant isolate; 2 (22%) of 9 patients had limited or no prior macrolide exposure. Initial MAC isolates in HIV-infected persons should routinely be tested for macrolide resistance.

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