Diseases, Conditions, Syndromes

Norovirus spikes across the Northeast

The "stomach bug" is unfortunately making the rounds these days. Norovirus rates in the Northeast are now at their highest levels since April, according to the CDC. The positive "stomach flu" rates in the Northeast are currently ...

Diseases, Conditions, Syndromes

Norovirus: What to know and how to avoid it

If you've been bit by a stomach bug lately, you're not alone. The Centers for Disease Control and Prevention (CDC) is reporting significant norovirus activity across the country, especially in the West and Northeast.

Diseases, Conditions, Syndromes

What to know about norovirus

Cases of norovirus—a common viral stomach illness—tend to occur in the U.S. between November and April. According to the Centers for Disease Control and Prevention, there have been at least 13 cruise ship outbreaks so ...

Diseases, Conditions, Syndromes

Norovirus: What to know and how to avoid it

Noroviruses are usually more widespread in the fall and winter, but you can get sick from the virus any time of the year. The Centers for Disease Control and Prevention (CDC) says norovirus is the leading cause of vomiting ...

Inflammatory disorders

Norovirus link to Crohn's disease may point to new therapies

A new study may have solved a mystery surrounding Crohn's disease, an inflammatory bowel illness where immune defenses, meant to attack invading microbes, instead mistakenly target the body's own digestive tract. Norovirus, ...

Diseases, Conditions, Syndromes

Norovirus outbreaks have increased to prepandemic levels

The number of norovirus outbreaks increased in the 2021 to 2022 surveillance year, returning to levels similar to prepandemic levels, according to research published in the Sept. 23 issue of the U.S. Centers for Disease ...

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Norovirus

Norovirus (formerly Norwalk agent) is an RNA virus (taxonomic family Caliciviridae) that causes approximately 90% of epidemic non-bacterial outbreaks of gastroenteritis around the world, and may be responsible for 50% of all foodborne outbreaks of gastroenteritis in the US. Norovirus affects people of all ages. The viruses are transmitted by faecally contaminated food or water, by person-to-person contact, and via aerosolization of the virus and subsequent contamination of surfaces.

After infection, immunity to norovirus is usually incomplete and temporary. There is an inherited predisposition to infection, and individuals with blood type O are more often infected, while blood types B and AB can confer partial protection against symptomatic infection.

Outbreaks of norovirus infection often occur in closed or semi-closed communities, such as long-term care facilities, overnight camps, hospitals, prisons, dormitories, and cruise ships where the infection spreads very rapidly either by person-to-person transmission or through contaminated food. Many norovirus outbreaks have been traced to food that was handled by one infected person.

Norovirus is rapidly inactivated by either sufficient heating or by chlorine-based disinfectants, but the virus is less susceptible to alcohols and detergents as it does not have a lipid envelope.

This text uses material from Wikipedia, licensed under CC BY-SA