During 2009-2018, four adenovirus, 10 astrovirus, 123 rotavirus, and 107 sapovirus gastroenteritis outbreaks were reported to the US National Outbreak Reporting System (annual median 30 outbreaks). Most were attributable to person-to-person transmission in long-term care facilities, daycares, and schools. Investigations of norovirus-negative gastroenteritis outbreaks should include testing for these viruses.
Keywords: NORS; National Outbreak Reporting System; United States; adenoviridae; astroviridae; disease outbreaks; foodborne diseases; long-term care; rotavirus; sapovirus; surveillance; viral diseases; viral gastroenteritis; viruses.