Key result
The recombinant GII.P16-GII.2 norovirus strain emerged as a major cause of acute gastroenteritis in Taiwan in 2016, with 72.0% of GII.2 outbreaks occurring in schools compared to 31.0% for non-GII.2 strains.
Observational (n=876)
Absolute Event Rate: 72% vs 31%
p-value: p=<0.0001
A new recombinant GII.P16-GII.2 norovirus strain emerged in Taiwan in late 2016, becoming the predominant cause of acute gastroenteritis outbreaks, particularly in schools.
May warrant enhanced school surveillance for norovirus; leaves open strain-specific prevention needs.
In Taiwan, acute gastroenteritis outbreaks caused by a new norovirus genotype GII.2 increased sharply toward the end of 2016. Unlike previous outbreaks, which often involved restaurants, GII.2 outbreaks mainly occurred in schools. Phylogenetic analysis indicates that these noroviruses are recombinant GII.P16-GII.2 strains.
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Liu et al. (2017) conducted an observational in Acute gastroenteritis (n=876). GII.P16-GII.2 norovirus vs. Non-GII.2 norovirus was evaluated on Proportion of outbreaks occurring in schools (p=<0.0001). The recombinant GII.P16-GII.2 norovirus strain emerged as a major cause of acute gastroenteritis in Taiwan in 2016, with 72.0% of GII.2 outbreaks occurring in schools compared to 31.0% for non-GII.2 strains.
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