Kanagawa-Negative, <Emphasis Type="Italic">tdh</Emphasis>- and <Emphasis Type="Italic">trh</Emphasis>-Positive <Emphasis Type="Italic">Vibrio parahaemolyticus</Emphasis> Isolated from Fresh Oysters Marketed in Fortaleza,Brazil |
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Authors: | Regine H S F Vieira Renata A Costa Francisca G R Menezes Giselle C Silva Grace N D Theophilo Dália P Rodrigues Rodrigo Maggioni |
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Institution: | Marine Sciences Institute (LABOMAR/UFC), Fortaleza-Ceará, Brazil. reginevieira@terra.com.br |
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Abstract: | Between October 2008 and June 2009, 15 samples of 10 live oysters each (Crassostrea rhizophorae) measuring 8.31–10.71 cm were purchased from a restaurant on the seashore of Fortaleza, Brazil. The Vibrio count ranged from 75 (estimated) to 43,500 CFU/g. Fourteen species were identified among the 56 isolated Vibrio strains, with V. parahaemolyticus as the most prevalent. Two of the 17 V. parahaemolyticus strains were urease-positive and tdh- and trh-positive on multiplex PCR, but neither produced β-hemolysis halos in Wagatsuma agar. Thus, fresh oysters served in natura
in Fortaleza, Brazil, were found to contain Vibrio strains known to cause gastroenteritis in humans. |
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