Norovirus outbreak in Majorca (Spain) associated with oyster consumption |
| |
Authors: | Galmés Truyols Antònia Duran Jaume Giménez Riutort Antonio Nicolau Cerdá Gabriel Arbona Isabel Catalina Bosch Arbona Margarita Portell Berga Joana Vanrell |
| |
Institution: | Servei d'Epidemiologia, Direcció General de Salut Pública i Participació, Govern de les Illes Balears, Palma de Mallorca, Illes Balears. agalmes@dgsanita.caib.es |
| |
Abstract: | We describe investigation into an outbreak of norovirus gastroenteritis associated with oyster consumption. A survey was conducted in 346 exposed persons, 266 of whom were cases. Only 14 feces samples from patients were sent to the National Microbiology Laboratory. Oysters collected at the production site were sent to the National Food Center. The oysters met the microbiological quality standard required before sale, which did not include virus investigation. Epidemiological analysis showed an association between gastroenteritis and consumption of oysters (OR = 60.4; 95% CI: 26.2-139.3) and razor shells (OR = 3.13; 95% CI: 1.4-6.9). Microbiological analysis confirmed norovirus in affected individuals but not in the oysters that had been tested after a longer purification period than those consumed. Food with a special risk of norovirus transmission should be strictly monitored. Investigators should dispose of the necessary laboratory resources to study food-borne norovirus outbreaks. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|