🦠microbiology review

Caliciviruses

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Caliciviruses are a family of single-stranded RNA viruses known for causing gastrointestinal infections in humans and animals. They are primarily responsible for outbreaks of viral gastroenteritis, particularly in settings such as cruise ships and nursing homes.

5 Must Know Facts For Your Next Test

  1. Norovirus, a member of the Caliciviridae family, is the leading cause of acute gastroenteritis worldwide.
  2. Caliciviruses are highly contagious and can be transmitted through contaminated food, water, surfaces, or direct person-to-person contact.
  3. Symptoms of calicivirus infection typically include vomiting, diarrhea, nausea, and abdominal pain.
  4. Infection usually resolves within 1-3 days without the need for antiviral treatment; however, dehydration can be a serious complication.
  5. Preventative measures include proper hand hygiene, disinfection of contaminated surfaces, and safe food handling practices.

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