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Vol. 14. Issue 1.
Pages 66-70 (January - February 2010)
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Vol. 14. Issue 1.
Pages 66-70 (January - February 2010)
Original Article
Open Access
Raw oysters can be a risk for infections
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Regine Helena Silva dos Fernandes Vieira1,
Corresponding author
reginevieira@terra.com.br

Correspondence to: Instituto de Ciências do Mar, Universidade Federal do Ceará, Av. da Abolição 3207, Meireles, Fortaleza, CE, Brasil. Tel: +55-85-3366-7027, Fax: +55-85 3366-7002.
, Oscarina Viana de Sousa1, Renata Albuquerque Costa2, Grace Nazareth Diogo Theophilo3, Andrew Macrae4, Antonio Adauto Fonteles Filho1, Dália dos Prazeres Rodrigues3
1 Institute of Marine Sciences, Fortaleza, CE, Brazil
2 PhD student in Fishery Engineering, UFC, Fortaleza, CE, Brazil
3 Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
4 Institute of Microbiology Prof. Paulo de Góes, Rio de Janeiro, RJ, Brazil
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Abstract

The aims of this study were to count and identify sucrose positive and negative vibrios isolated from cultivated Crassostrea rhizophorae oysters during their growing cycle. Every month for 12 months, 10 to 18 oysters were collected for study. Collections occurred at the Center for Studies of Coastal Aquaculture (CSCA), which is associated with the Institute of Marine Science, Labomar, located in Euzebio, Ceará, Brazil. Approximately 150 oysters and their intervalvular liquor were studied. Vibrio Standard Plates Counts (SPC) from oyster meat and their intervalvular liquor varied from 25 to 59,000,000 CFU/g. For most of the 12 months of the oysters’ life, it was possible to identify Vibrio parahaemolyticus. Vibrio carchariae was identified in four collections. Among other isolated species, the most important, considering public health risks, was V. vulnificus, although only one strain was confirmed. We concluded that retail purchased oysters should never be eaten raw or undercooked because many species of the genus Vibrio are known to be pathogenic to humans and live naturally on and in shellfish throughout their life cycle.

Keywords:
Vibrio spp
oyster
public health
Vibrio parahaemolyticus
Vibrio carchariae
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The Brazilian Journal of Infectious Diseases
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