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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Transmission of a multidrug-resistant Mycobacterium tuberculosis strain resembling "strain W" among noninstitutionalized, human immunodeficiency virus-seronegative patients.

Since 1990, several outbreaks of multidrug-resistant tuberculosis (MDR-TB) have been described among institutionalized patients infected with human immunodeficiency virus (HIV). We describe a community MDR-TB outbreak among HIV-seronegative patients in Cape Town, South Africa. Isolates were characterized by restriction fragment length polymorphism (RFLP) analysis and dot-blot hybridization analysis of mutations conferring resistance for isoniazid, rifampin, streptomycin, and ethambutol. All isolates were identical on RFLP analysis. In 2 patients, RFLP analysis showed exogenous reinfection during or after treatment for drug-susceptible TB. Mutation analysis confirmed the genotypic identity of the isolates. The infecting strain was genotypically related to strain W, which is responsible for the majority of MDR-TB outbreaks in New York City. Transmission of MDR-TB is thus not limited to HIV-seropositive patients in an institutional setting but occurs within a community.[1]

References

  1. Transmission of a multidrug-resistant Mycobacterium tuberculosis strain resembling "strain W" among noninstitutionalized, human immunodeficiency virus-seronegative patients. van Rie, A., Warren, R.M., Beyers, N., Gie, R.P., Classen, C.N., Richardson, M., Sampson, S.L., Victor, T.C., van Helden, P.D. J. Infect. Dis. (1999) [Pubmed]
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