Pandemic influenza A(H1N1) 2009 breakthrough infections and estimates of vaccine effectiveness in Germany 2009-2010
Wichmann, O and Stöcker, P and Poggensee, G and Altmann, D and Walter, D and Hellenbrand, W and Krause, G and Eckmanns, T, Eurosurveillance, 15, 19561 (2010), https://doi.org/10.2807/ese.15.18.19561-en