Impact of an emergent norovirus variant in 2009 on norovirus outbreak activity in the United States

Catherine Yen; Mary E Wikswo; Ben A Lopman; Jan Vinje; Umesh D Parashar; Aron J Hall

doi:10.1093/cid/cir478

Impact of an emergent norovirus variant in 2009 on norovirus outbreak activity in the United States

Clin Infect Dis. 2011 Sep;53(6):568-71. doi: 10.1093/cid/cir478. Epub 2011 Aug 10.

Authors

Catherine Yen¹, Mary E Wikswo, Ben A Lopman, Jan Vinje, Umesh D Parashar, Aron J Hall

Affiliation

¹ Epidemic Intelligence Service Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA. cyen@cdc.gov

PMID: 21832262
DOI: 10.1093/cid/cir478

Abstract

In October 2009, a new genogroup II, type 4 (GII.4) norovirus variant was identified in the United States. We collected norovirus outbreak data from 30 states to assess whether this new strain was associated with increased acute gastroenteritis activity. No increase in norovirus outbreaks was observed during the 2009-2010 winter.

MeSH terms

Acute Disease
Caliciviridae Infections / epidemiology*
Caliciviridae Infections / virology*
Cross Infection / epidemiology
Cross Infection / virology
Disease Outbreaks*
Gastroenteritis / epidemiology*
Gastroenteritis / virology*
Genotype
Humans
Long-Term Care
Norovirus / classification*
Norovirus / genetics
Norovirus / isolation & purification
Nursing Homes
Population Surveillance
Seasons
United States / epidemiology