Impact of non-pharmaceutical interventions (NPIs) for SARS-CoV-2 on norovirus outbreaks: an analysis of outbreaks reported by 9 US States

In April 2020, the incidence of norovirus outbreaks reported to the National Outbreak Reporting System (NORS) dramatically declined. We used regression models to determine if this decline was best explained by underreporting, seasonal trends, or reduced exposure due to non-pharmaceutical interventio...

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Bibliographic Details
Published inThe Journal of infectious diseases
Main Authors Kraay, Alicia N M, Han, Peichun, Kambhampati, Anita K, Wikswo, Mary E, Mirza, Sara A, Lopman, Benjamin A
Format Journal Article
LanguageEnglish
Published United States Oxford University Press 19.02.2021
Subjects
Brief Report
SARS-CoV-2
norovirus
non-pharmaceutical interventions
social distancing
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Summary:In April 2020, the incidence of norovirus outbreaks reported to the National Outbreak Reporting System (NORS) dramatically declined. We used regression models to determine if this decline was best explained by underreporting, seasonal trends, or reduced exposure due to non-pharmaceutical interventions (NPIs) implemented for SARS-CoV-2 using data from 9 states from July 2012-July 2020. The decline in norovirus outbreaks was significant for all 9 states and underreporting or seasonality are unlikely to be the primary explanations for these findings. These patterns were similar across a variety of settings. NPIs appear to have reduced incidence of norovirus, a non-respiratory pathogen.
ISSN:0022-1899
1537-6613
DOI:10.1093/infdis/jiab093