Listeria monocytogenes has created great concern among health authorities since the 1980's because of an increase in the number of outbreaks of human listeriosis and its possible association with contaminated food. There are no reports of an association between listeriosis and food contamination in Brazil, although recent studies have identified this bacteria in poultry meat. The goals of the present study were to investigate the incidence of L. monocytogenes in commercial turkey meat, to evaluate the bacterial sensitivity to antimicrobial agents, and to conduct serology tests of L. monocytogenes isolates. Forty samples of turkey meat were studied: 10 samples of whole turkey blanquet, 10 samples of sliced turkey blanquet, 10 samples of whole turkey ham, and 10 samples of sliced turkey ham. These samples were inspected by the Brazilian Federal Inspection Service and were retailed in the city of Niterói. Bacteria were not detected in whole products; however, incidence was high in sliced products (80% in blanquet and 90% in ham). Isolates of L. monocytogenes, which belonged to serovars 4b, ½ c, ½ b, and ½ a, were found to be sensitive to all antimicrobial agents tested. The most common serovars were those known to cause listeriosis. Despite the lack of isolation of L. monocytogenes in whole meat, its presence in sliced turkey meat indicates that improved sanitation in the processes of slicing and packaging is urgently needed.
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