Utilização do antibiograma como ferramenta de tipagem fenotípica de Staphylococcus aureus isolados de manipuladores, leite cru e queijo minas frescal em laticínio de Goiás, Brasil
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Data
2006
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Resumo
During a year (March/2004 to February/2005) 140 samples of raw
milk, dairy staff, and Minas Frescal cheese were analyzed for the presence
of S. aureus in a dairy plant in Goiás, Brazil. Strains were isolated from
75% of the personnel investigated resulting in 31 (33.7%) isolates
from 92 collected samples (46 from hands and 46 from nasopharynx).
The 24 raw milk samples resulted in 18 (75.0%) positive samples and
26 isolates, with mean number: 1.1 x 10 5 CFU/ml. Among 24 cheese
samples 17 (70.8%) were positive resulting in 20 isolates, with mean number: 3.8 x 104 CFU/g. Thirteen samples (54.2%) were above the
limit established by the brazilian legislation (10 3 CFU/g). The
differentiation of strains was performed by antimicrobial susceptibility
test. All isolates were susceptible to ciprofloxacin and gentamicin.
Resistance was observed in five (6.5%) isolates for erythromycin, 19
(24.7%) for tetracycline, one (1.3%) for vancomycin, four (5.2%) for
oxacillin and 53 (68.8%) isolates for penicillin. Eleven isolates (14.3%)
were susceptible to all antibiotics tested and 18 (23.4%) were resistant
to more than one antibiotic. The antibiotic susceptibility allowed the
discrimination of isolates in 12 different profiles (A-L), but the
phenotypic typing failed to determine the source of bacteria for the
cheese.
Descrição
Palavras-chave
Queijo, Staphylococcus aureus, Manipuladores, Susceptibilidade antimicrobiana, Cheese, Staphylococcus aureus, Personnel, Antibiotic susceptibility
Citação
ANDRÉ, Maria Cláudia Dantas Porfírio Borges; SANTOS, Patrícia Pimentel; CAMPOS, Maria Raquel Hidalgo; BORGES, Liana Jayme; SERAFINI, Álvaro Bisol. Utilização do antibiograma como ferramenta de tipagem fenotípica de Staphylococcus aureus isolados de manipuladores, leite cru e queijo minas frescal em laticínio de Goiás, Brasil. Brazilian Journal of Veterinary Research and Animal Science, São Paulo, v. 43, supl., p. 102-108, 2006.