Artigo
Short Report: Identification of Virulence-Associated Plasmids in Rhodococcus equi in Humans with and without Acquired Immunodeficiency Syndrome in Brazil
Fecha
2011-09-01Registro en:
American Journal of Tropical Medicine and Hygiene. Mclean: Amer Soc Trop Med & Hygiene, v. 85, n. 3, p. 510-513, 2011.
0002-9637
10.4269/ajtmh.2011.10-0695
WOS:000294581400022
2209124317273797
Autor
Universidade Estadual Paulista (Unesp)
Kitasato Univ
Universidade Federal de Santa Maria (UFSM)
Universidade do Estado do Rio de Janeiro (UERJ)
Feira de Santana State Univ
Univ Feira de Santana
Resumen
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.