Résumé :
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[BDSP. Notice produite par INIST R0xNqmV2. Diffusion soumise à autorisation]. Context In May and June 1998, reported Vibrio parahaemolyticus infections increased sharply in Texas. Objective To determine factors that contributed to the increase in V parahaemolyticus infections. Design, Setting, and Participants Cross-sectional survey of persons reporting gastroenteritis after eating seafood in Texas ; survey of environmental conditions in Galveston Bay. Main Outcome Measures Traceback of oysters, water quality measures in harvest areas, presence of V parahaemolyticus in stool cultures ; comparison of median values for environmental conditions before and during the outbreak compared with during the previous 5 years. Results Between May 31 and July 10,1998,416 persons in 13 states reported having gastroenteritis after eating oysters harvested from Galveston Bay. All 28 available stool specimens from affected persons yielded V parahaemolyticus serotype 03 : K6 isolates. Oyster beds met current bacteriologic standards during harvest and fecal coliform counts in water samples were within acceptable limits. Median water temperature and salinity during May and June 1998 were 30.0°C and 29.6 parts per thousand (ppt) compared with 28.9°C and 15.6 ppt for the previous 5 years (P<. conclusions this is the first reported outbreak of v parahaemolyticus serotype o3 : k6 infection in united states.>
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