|Title||Another possible food-borne outbreak of hepatitis a in the Netherlands indicated by two closely related molecular sequences, July to October 2011|
|Author(s)||Fournet, N.; Baas, D.; Pelt, W. van; Swaan, C.; Ober, H.; Isken, L.; Cremer, J.; Friesema, I.; Vennema, H.; Boxman, I.; Koopmans, M.; Verhoef, L.|
|Source||Eurosurveillance 17 (2012)6. - ISSN 1025-496X|
|Publication type||Non-refereed article in scientific journal|
In November 2011, a cluster of initially five cases of hepatitis A infection with closely related strains was identified in the Netherlands. England reported possibly related cases. Strains with identical sequences had been involved in previous outbreaks linked to semi-dried tomatoes. Investigation of the Dutch cluster suggested a link with ready-to-eat salads including those containing semi-dried tomatoes. Despite traceback, a source was not identified. Vigilance is needed, and rapid sharing of data may help source-tracing.