Norovirus: New developments and implications for travelers' diarrhea

Mark P. Simons, Brian L. Pike, Christine E. Hulseberg, Michael G. Prouty, Brett E. Swierczewski*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Noroviruses are the leading cause of acute gastroenteritis in the United States and are responsible for at least 50 % of acute gastroenteritis outbreaks occurring worldwide each year. In addition, noroviruses have caused outbreaks on cruise ships, in nursing homes and hospitals, and in deployed military personnel, but its role in the etiology of travelers' diarrhea is not well defined. The aim of this review is to describe the role of noroviruses in travelers' diarrhea in terms of epidemiology, current diagnostics, treatment and vaccine development efforts. Studies have shown prevalence rates of noroviruses in travelers' diarrhea cases ranging from 10-65 %. It is likely that norovirus prevalence rates are highly underestimated in travelers' diarrhea due to rapid onset, short duration of the illness, limited availability of laboratory facilities, and the fact that most clinical laboratories lack the diagnostic capability to detect noroviruses in stool. Further, additional studies are needed to accurately determine the true prevalence rates of norovirus as an etiologic agent of diarrhea among travelers to different regions around the world. With the rapid progress in the development of a norovirus vaccine, travelers could serve as an ideal population for future norovirus clinical trials.

Original languageEnglish
Article number1
JournalTropical Diseases, Travel Medicine and Vaccines
Issue number1
StatePublished - 2015
Externally publishedYes


  • Acute gastroenteritis
  • Norovirus
  • Travelers' diarrhea


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