Norovirus outbreaks linked to oyster consumption in the United Kingdom, Norway, France, Sweden and Denmark, 2010 Westrell, T and Dusch, V and Ethelberg, S and Harris, J and Hjertqvist, M and Jourdan-da Silva, N and Koller, A and Lenglet, A and Lisby, M and Vold, L, Eurosurveillance, 15, 19524 (2010), https://doi.org/10.2807/ese.15.12.19524-en