Norovirus News and Research

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Norovirus (formerly Norwalk agent) is an RNA virus (taxonomic family Caliciviridae) that causes approximately 90% of epidemic nonbacterial outbreaks of gastroenteritis around the world, and may be responsible for 50% of all foodborne outbreaks of gastroenteritis in the United States.

Harvard scientists design evolutionary traps to stop viral mutations

When a virus mutates, the world usually finds out the hard way. Variants of influenza and SARS‑CoV‑2 can slip past vaccines and antibody drugs before scientists fully understand what has changed.

15 Sep 2026

Novel norovirus vaccine approach may be adaptable for other RNA viruses

Every RNA virus — from stomach bugs and influenza to chickenpox and the common cold — has its own story to tell, with a unique combination of symptoms, rates of transmission, duration, and chemical blueprint.

19 Aug 2026

Heavy rainfall and flooding raise infectious disease risks across Europe

A rapid review of 14 studies found that heavy rainfall and flooding were associated with outbreaks and increased incidence of several infectious diseases across Europe, particularly campylobacteriosis and leptospirosis. The authors highlighted major evidence gaps and called for stronger One Health surveillance, public health communication, sanitation, and flood-response planning.

10 Aug 2026

Machine learning predicts pathogen risks in drinking water sources

Safe drinking water depends not only on treatment, but also on knowing when harmful microorganisms may be present in source waters.

7 Aug 2026

Cryo-EM study reveals dynamic structure of human norovirus

Human norovirus is the leading cause of acute gastroenteritis worldwide and is estimated to infect 600–700 million people each year.

4 Aug 2026

Airplane wastewater pilot shows how airports could track pathogens across borders

Researchers showed that airplane wastewater from a shared US-UK transatlantic route could be collected and analyzed to detect respiratory and enteric pathogen genetic material. The pilot also captured SARS-CoV-2 lineage patterns, including earlier detection of XEC on UK-origin flights, while showing the need for harmonized assays and broader sampling.

4 Aug 2026

Two microscopic parasites cause widespread diarrheal illness across America

You've seen the alarming headlines about parasites causing "explosive diarrhea" across the U.S. Two microscopic parasites – cyclospora cayetanensis and cryptosporidium – can both cause prolonged gastrointestinal illness, including watery diarrhea, stomach cramps, and dehydration.

24 Jul 2026

Yale study offers critical clues for future norovirus treatments

As the leading cause of viral gastroenteritis worldwide, norovirus is an all too familiar ailment. Its telltale digestive upset — not to mention its reputation for being notoriously contagious — has earned it the nicknames "winter vomiting bug" and "stomach flu."

26 Jun 2026

Zero-risk food safety approach may increase waste and costs

These food safety measures and ultra-sensitive tests may drive edible food being thrown away, excessive packaging, and extra costs for consumers.

17 Mar 2026

Breakthrough enables continuous laboratory growth of human norovirus

Researchers at Baylor College of Medicine report in Science Advances a breakthrough in human norovirus (HuNoV) research.

4 Feb 2026

Study unravels the genetic shield against winter vomiting disease

Winter vomiting disease is caused by the Norovirus, which is most virulent during the colder half of the year.

24 Oct 2025

Breakthrough in RNA-targeted drug discovery offers hope against viral diseases

In a quest to develop new antiviral drugs for COVID-19 and other diseases, a collaboration led by scientists at The Wertheim UF Scripps Institute has identified a potential new drug against the virus that causes COVID-19.

6 Oct 2025

New strategies to tackle resistant foodborne pathogens

Innovative approaches in food and beverage analysis are transforming pathogen detection and control, emphasizing the role of natural compounds and sequencing.

19 Aug 2025

Norovirus GII.17 overtakes GII.4 as the dominant strain in US outbreaks

Norovirus GII.17 has rapidly overtaken GII.4 as the leading cause of norovirus outbreaks in the United States between 2022 and 2025. This unprecedented shift signals an urgent need for continued genomic surveillance and preparedness for future outbreak trends.

4 Jun 2025

Lower temperatures increase the risk of gastroenteritis among Rohingya refugees in Bangladesh

Colder temperatures are linked with increased risk of diarrhea among Rohingya refugees in Bangladesh, emphasizing the need for climate-sensitive health strategies in refugee settings.

18 Apr 2025

CDC study identifies leading culprits of foodborne illness

Researchers from the CDC and Colorado School of Public Health estimate that seven major pathogens caused 9.9 million foodborne illnesses in the US in 2019. Norovirus led illness and hospitalization counts, while Salmonella caused the most deaths.

25 Mar 2025

What’s behind the rise in foodborne illness outbreaks? CDC uncovers key risks and fixes

Bacterial foodborne outbreaks in the U.S. increased while viral outbreaks declined between 2014 and 2022, with environmental contamination rising as a key cause. The study highlights how improved hygiene reduced viral transmission but shows persistent risks from improper food handling and temperatures.

13 Mar 2025

Scientists discover new strategy to fight back against norovirus

Scientists at The University of Texas at Austin, in collaboration with researchers from the University of North Carolina at Chapel Hill and the National Institutes of Health, have discovered a strategy to fight back against norovirus, a leading cause of gastroenteritis worldwide.

6 Mar 2025

Penn researchers develop optimized framework for COVID-19 vaccination distribution

Engineering and medical researchers at Penn have developed a groundbreaking framework that can determine the best and most computationally optimized distribution strategy for COVID-19 vaccinations in any given community.

22 Jan 2025

The Rise of Ionized Hydrogen Peroxide (iHP) in Modern Disinfection

Discover the benefits of ionized hydrogen peroxide for disinfection. Jim Reynolds shares expert insights on its applications and impact on industry standards.

From SteraMist Disinfection and Decontamination Technology 13 Jan 2025