The original version of this article was published with two of the author affiliations listed in the incorrect order and subsequently three authors were listed with institutions incorrectly assigned to them.
The transposed institutions were ‘National Reference Center for Influenza, Robert Koch Institute, Berlin, Germany State Institute of Public Health’ and ‘Bavarian Health and Food Safety Authority, Oberschleißheim, Germany’.
The affected authors are listed with their correct affiliations below
Barbara Biere: National Reference Center for Influenza, Robert Koch Institute, Berlin, Germany
Bernhard Liebl: State Institute of Public Health, Bavarian Health and Food Safety Authority, Oberschleißheim, Germany; Ludwig Maximilians-Universität, Munich, Germany
Andreas Sing: Department of Public Health Microbiology, Bavarian Health and Food Safety Authority, Oberschleißheim, Germany; State Institute of Public Health, Bavarian Health and Food Safety Authority, Oberschleißheim, Germany; Ludwig Maximilians-Universität, Munich, Germany
The original version of the article has now been corrected.