Emerging Infectious Diseases (Apr 2018)

Bimodal Seasonality and Alternating Predominance of Norovirus GII.4 and Non-GII.4, Hong Kong, China, 2014–2017

  • Martin Chi-Wai Chan,
  • Kirsty Kwok,
  • Lin-Yao Zhang,
  • Kirran N. Mohammad,
  • Nelson Lee,
  • Grace C.Y. Lui,
  • E. Anthony S. Nelson,
  • Raymond W.M. Lai,
  • Ting F. Leung,
  • Paul K.S. Chan

DOI
https://doi.org/10.3201/eid2404.171791
Journal volume & issue
Vol. 24, no. 4
pp. 767 – 769

Abstract

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We report emerging subtropical bimodal seasonality and alternating predominance of norovirus GII.4 and non-GII.4 genotypes in Hong Kong. GII.4 predominated in summer and autumn months and affected young children, whereas emergent non-GII.4 genotypes predominated in winter months and affected all age groups. This highly dynamic epidemiology should inform vaccination strategies.

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