Enhanced surveillance during a large outbreak of bloody diarrhoea and haemolytic uraemic syndrome caused by Shiga toxin/verotoxin-producing Escherichia coli in Germany, May to June 2011 Wadl, M and Rieck, T and Nachtnebel, M and Greutélaers, B and an der Heiden, M and Altmann, D and Hellenbrand, W and Faber, M and Frank, C and Schweickert, B and Krause, G and Benzler, J and Eckmanns, T and on behalf of the HUS surveillance and laboratory team, Collective, Eurosurveillance, 16, 19893 (2011), https://doi.org/10.2807/ese.16.24.19893-en