Norovirus is the leading cause of acute gastroenteritis worldwide.
Notes on verification
Confirmed by CDC, WHO, and peer-reviewed epidemiological literature (e.g., Ahmed et al., Lancet Infectious Diseases) with consistent global estimates of disease burden. [tier=silver indep_score=0.77 clusters=2 claim_tier=notable]
Sources
- Ten Interesting Things About Norovirus Worth Knowing (seed:health_and_medicine)
- https://www.cdc.gov/norovirus/about/index.html (corroboration)
- https://www.who.int/news-room/fact-sheets/detail/norovirus (corroboration)