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. 2002 Oct;23(10):620-2.
doi: 10.1086/501982.

Pseudo-outbreak of multidrug-resistant Mycobacterium tuberculosis associated with presumed laboratory processing contamination

Gonzalo Bearman  1 , Carlos Vaamonde, Davise Larone, Lewis Drusin, Gianna Zuccotti
Affiliations

Pseudo-outbreak of multidrug-resistant Mycobacterium tuberculosis associated with presumed laboratory processing contamination

Gonzalo Bearman et al. Infect Control Hosp Epidemiol. 2002 Oct.

Abstract

An investigation prompted by six positive cultures for multidrug-resistant Mycobacterium tuberculosis during a 7-week period found that an unusual resistance pattern, temporal proximity of laboratory processing, and identical DNA fingerprints supported the theory of cross-contamination. Laboratory processing procedures included specimen batching and multi-use vials of buffer solution. Processing procedures were changed and no additional cases of suspected cross-contamination have been observed.

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