First sequence-confirmed case of infection with the new influenza A(H1N1) strain in Germany Melzl, H and Wenzel, J J and Kochanowski, B and Feierabend, K and Kreuzpaintner, B and Kreuzpaintner, E and Rohrhofer, A and Schreder-Meindl, S and Wollner, H and Salzberger, B and Reischl, U and Jilg, W and Wolf, H and Niller, H H, Eurosurveillance, 14, 19203 (2009), https://doi.org/10.2807/ese.14.18.19203-en