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Euro Surveill. 2017 Jan 26;22(4). pii: 30447. doi: 10.2807/1560-7917.ES.2017.22.4.30447.

Steep rise in norovirus cases and emergence of a new recombinant strain GII.P16-GII.2, Germany, winter 2016.

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Department of Infectious Diseases, Robert Koch-Institute, Berlin, Germany.
Consultant Laboratory for Noroviruses, Robert Koch-Institute, Berlin, Germany.
Department for Infectious Disease Epidemiology, Robert Koch-Institute, Berlin, Germany.
Institute of Virology, University of Bonn Medical Centre, Bonn, Germany.
Institute of Medical Virology, Charité University Medicine, Berlin, and Labor Berlin, Charité-Vivantes GmbH, Berlin, Germany.
Institute of Medical Microbiology, Göttingen, Germany.


Since early November 2016, the number of laboratory-confirmed norovirus infections reported in Germany has been increasing steeply. Here, we report the detection and genetic characterisation of an emerging norovirus recombinant, GII.P16-GII.2. This strain was frequently identified as the cause of sporadic cases as well as outbreaks in nine federal states of Germany. Our findings suggest that the emergence of GII.P16-GII.2 contributed to rising case numbers of norovirus gastroenteritis in Germany.


GII.P16-GII.2; Germany; emergence; norovirus; recombinant

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