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Norovirus: 684 Million Affected, No Vaccine in Sight

12/31/2025

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Summary

Story summary

Norovirus affects about 684 million people annually, causing gastroenteritis with diarrhea and vomiting.
It spreads easily through contaminated surfaces and the fecal-oral route.
In the United States, high-risk groups include the elderly and young children, with 570–800 deaths and 70,000 hospitalizations each year.
There is no vaccine due to the virus's mutations.
Immunity after recovery is not long-lasting.

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Story summary

Norovirus affects about 684 million people annually, causing gastroenteritis with diarrhea and vomiting.
It spreads easily through contaminated surfaces and the fecal-oral route.
In the United States, high-risk groups include the elderly and young children, with 570–800 deaths and 70,000 hospitalizations each year.
There is no vaccine due to the virus's mutations.
Immunity after recovery is not long-lasting.