Abstract
An outbreak of hepatitis A, affecting 183 people, occurred in Valencia (Spain). Epidemiological evidence pointed to an association of the outbreak with consumption of Coquina clams (Donax sp), imported frozen from Peru. Shellfish were analysed for the presence of hepatitis A virus (HAV), enteroviruses, rotaviruses, astroviruses, caliciviruses and hepatitis E virus. HAV was detected in 75% of assayed shellfish samples. Other enteric viruses were occasionally found in the same samples. Molecular epidemiological analysis of fragments of the VP1/2A and the 5' end of the genome from shellfish and sera isolates, revealed the presence of six variants belonging to a single genotype.
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