Article
Antimicrobial resistance and subtyping of Salmonella enterica subspecies enterica serovar Enteritidis isolated from human outbreaks and poultry in southern Brazil
Registro en:
VAZ, C. S. L. et al. Antimicrobial resistance and subtyping of Salmonella enterica subspecies enterica serovar Enteritidis isolated from human outbreaks and poultry in southern Brazil. Poultry Science, v.89, p.1530-1536, 2010.
0032-5791
Autor
Vaz, C. S. L.
Streck, A. F.
Michael, G. B.
Marks, F. S.
Rodrigues, Dália dos Prazeres
Reis, E. M. F. dos
Cardoso, M. R. I.
Canal, C. W.
Resumen
To investigate antimicrobial resistance, 96
Salmonella enterica subspecies enterica serovar Enteritidis
strains isolated from salmonellosis outbreaks and
poultry-related products obtained in southern Brazil
were analyzed. Macrorestriction patterns, obtained by
pulsed-field gel electrophoresis and phage types, were
assessed. Although 43.75% of samples were sensitive
to all drugs tested, resistance to sulfonamide (34.37%),
trimethoprim-sulfamethoxazole (25.00%), nalidixic acid
(14.58%), streptomycin (2.08%), gentamicin, and tetracycline
(1.04%) was identified. Furthermore, 89.60% of
strains belonged to phage type 4, and a predominant
pulsed-field gel electrophoresis genotype represented by
82.29% of the strains was identified, suggesting that a
clonal group was distributed in poultry, food, and human
isolates. Although it was not possible to associate
strains from different sources, the occurrence of antimicrobial-
resistant Salmonella Enteritidis strains supports
the need to establish monitoring programs to identify
the emergence of potential resistance patterns and to
direct policies for use of these drugs in food-producing
animals.