Norovirus outbreaks in Beijing, China, from 2014 to 2017.

•Noroviruses are a leading cause of acute gastroenteritis outbreaks in Beijing, China.•Most norovirus outbreaks occur in the spring.•The majority of the norovirus outbreaks were associated with kindergartens and elementary schools.•Non-GII.4 noroviruses predominated in Beijing, China from 2014 to 2017.•Norovirus outbreaks increased 9.2 times during 2016–2017.