Norovirus prevention and the prevalence of asymptomatic norovirus infection in kindergartens and primary schools in Changzhou, China: Status of the knowledge, attitudes, behaviors, and requirements

•4.1% of children are asymptomatically infected by NoV in Changzhou.•Teachers in kindergartens know more about NoV than those in primary schools.•Suburban schools need more future education on norovirus prevention.•The Morning Examination Program is worthy of promotion for the prevention of NoV.