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Am J Trop Med Hyg. 2011 Sep;85(3):510-3. doi: 10.4269/ajtmh.2011.10-0695.

Short report: Identification of virulence-associated plasmids in Rhodococcus equi in humans with and without acquired immunodeficiency syndrome in Brazil.

Author information

1
Department of Veterinary Hygiene and Public Health, School of Veterinary Medicine and Animal Science, Universidad Estadual Paulista, Botucatu, Sao Paulo, Brazil. mgribeiro@fmvz.unesp.br

Abstract

Virulence of Rhodococcus equi strains from 20 humans in Brazil was investigated by using a polymerase chain reaction to characterize isolates as virulent (VapA), intermediately virulent (VapB), and avirulent. Nine isolates were obtained from human immunodeficiency virus (HIV)-positive patients, six from HIV-negative patients, and five from patients of unknown status. Five isolates were VapB positive, four were VapA positive, and eleven were avirulent. Among the nine isolates from HIV-positive patients, five contained VapB plasmids and two contained VapA plasmids. Five VapB-positive isolates had the type 8 virulence plasmid. Eleven of the patients had a history of contact with livestock and/or a farm environment, and none had contact with pigs.

PMID:
21896813
PMCID:
PMC3163875
DOI:
10.4269/ajtmh.2011.10-0695
[Indexed for MEDLINE]
Free PMC Article

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