Spatiotemporal Trends in Norovirus Outbreaks in the United States, 2009-2019.

ABSTRACT:

Background

Globally, noroviruses cause infections year-round but have recognized winter seasonality in the Northern Hemisphere and yearly variations in incidence. With candidate norovirus vaccines in development, understanding temporal and geographic trends in norovirus disease is important to inform potential vaccination strategies and evaluate vaccine impact.

Methods

We analyzed data from the National Outbreak Reporting System (NORS) and CaliciNet on single-state norovirus outbreaks that occurred during August 2009-July 2019 in the contiguous United States. We defined norovirus season onset and offset as the weeks by which 10% and 90% of norovirus outbreaks in a surveillance year occurred, respectively, and duration as the difference in weeks between onset and offset. We c

SUBMITTER: Kambhampati AK 

PROVIDER: S-EPMC11389822 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature