Increased Detection of Emergent Recombinant Norovirus GII.P16-GII.2 Strains in Young Adults, Hong Kong, China, 2016–2017
Kirsty Kwok, Sandra Niendorf, Nelson Lee, Tin-Nok Hung, Lok-Yi Chan, Sonja Jacobsen, E. Anthony S. Nelson, Ting F. Leung, Raymond W.M. Lai, Paul K.S. Chan
, and Martin C.W. Chan
Author affiliations: The Chinese University of Hong Kong, Hong Kong, China (K. Kwok, N. Lee, T.-N. Hung, L.-Y. Chan, E.A.S. Nelson, T.F. Leung, R.W.M. Lai, P.K.S. Chan, M.C.W. Chan); Consultant Laboratory for Noroviruses, Robert Koch Institute, Berlin, Germany (S. Niendorf, S. Jacobsen)
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Figure 1
Figure 1. Emergence of a new recombinant norovirus GII.P16-GII.2, Hong Kong, China, winter 2016–2017. A) Distribution of norovirus genotypes, July 2016–February 2017. B) Proportion of norovirus case-patients among 3 stratified age groups. C) Age distribution of hospitalized case-patients with GII.4 and GII.2 infections. A total of 214 GII.4 and 86 GII.2 case-patients are shown. Black horizontal lines represent medians. Gray shading denotes young adults (YA; 18–40 years of age). p value calculated by using Mann-Whitney U-test.
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