Abstract
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.
Highlights
During 2009–2018, four adenovirus, 10 astrovirus, 123 rotavirus, and 107 sapovirus gastroenteritis outbreaks were reported to the US National Outbreak Reporting System
We describe acute gastroenteritis (AGE) outbreaks caused by adenovirus, astrovirus, sapovirus, and rotavirus that were reported to National Outbreak Reporting System (NORS) during 2009–2018
During 2009–2018, a total of 323 outbreaks caused by adenovirus, astrovirus, rotavirus, or sapovirus were reported to NORS
Summary
Etiologies were reported in 79 (24.5%) of the 323 outbreaks; 51 (64.5%) of the 79 included norovirus as an etiology. The most common etiology combinations were rotavirus and norovirus (19 [24.1%]), sapovirus and norovirus (7 [8.9%]), and sapovirus, norovirus, and astrovirus (7 [8.9%]). Reporting increased over time; most (62.0%) multiple-etiology outbreaks were reported during 2017–2018 (Table 1). Most astrovirus (8 [80%]) and sapovirus (78 [72.9%]) outbreaks occurred during. Most rotavirus outbreaks occurred during January–May (102 [82.9%]) (Figure 1). Common outbreak settings included long-term care facilities (LTCFs) (145 [59.4%]), child daycares (27 [11.1%]), and schools (20 [8.2%]) (Table 1). Most rotavirus (80 [65.0%]) and sapovirus (63 [58.9%]) outbreaks occurred in LTCFs. Among 3,688 cases for which data were available, 64.2% were in women and girls. Compared with 20.4% of astrovirus outbreak cases, higher percentages (37.5%–42.0%) of adenovirus, rotavirus, and sapovirus outbreak cases were among persons >50 years old. Rotavirus outbreaks had the highest proportion of cases in children
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