🔗 Share this article

Norovirus refers to a family of approximately 50 viral strains that all lead to one very unpleasant outcome: extended periods in the restroom. Annually, roughly 684 million individuals globally contract the virus.

Norovirus is a form of viral stomach flu, which is “irritation of the bowel and the large intestine that can cause loose stools” and nausea and vomiting, notes an infectious disease physician.

Although it can spread year-round, it has earned the moniker “winter vomiting illness” because its cases rise from December and early spring across the northern hemisphere.

Here is key information to understand.

What is the Method by Which Norovirus Spread?

This pathogen is exceptionally infectious. Typically, the virus invades the gastrointestinal tract through microscopic viral particles originating in a sick individual's spit and/or stool. These germs may end up on surfaces, or contaminate food or drink, and ultimately in your mouth – “what we call fecal-oral transmission”.

The virus can stay infectious for up to 14 days upon non-porous surfaces like handles or toilets, and it takes an extremely small exposure for infection. “The infectious dose for this virus is under 20 viral particles.” In comparison, COVID-19 need roughly one to four hundred particles to infect. “When a person, is suffering from norovirus infection, there’s billions of the virus in every gram of stool.”

There is also the possibility of spread through particles in the air, especially when you are in close proximity to an individual when they are suffering from symptoms like severe diarrhea and/or being sick.

Norovirus becomes infectious approximately two days prior to the onset of symptoms, and individuals are often contagious for several days or even a few weeks after symptoms subside.

Crowded environments including nursing homes, daycares and travel hubs are a “prime location for spreading the infection”. Cruise ships have a bad reputation: health authorities note dozens of outbreaks on ships on a regular basis.

Tell-Tale Signs of Norovirus?

The beginning of norovirus symptoms can feel rapid, initially involving abdominal cramping, perspiration, chills, nausea, throwing up along with “profuse diarrhoea”. Typically, the illness are considered “moderate” from a medical standpoint, which means they resolve within 72 hours.

However, it’s a remarkably debilitating illness. “People can feel pretty fatigued; experiencing a low-grade fever, headaches. In most cases, people cannot continue doing their normal activities.”

When is Medical Care for Norovirus?

Annually, norovirus causes several hundred fatalities as well as tens of thousands of hospitalizations in some countries, where people over 65 facing the highest risk. The groups at greatest risk of experiencing serious norovirus are “children less than five years of age, and especially older individuals and people that are immunocompromised”.

Those in these vulnerable age groups can also be particularly susceptible to kidney injury because of dehydration caused by severe diarrhea. If you or loved one falls into a higher-risk age category and cannot keep down liquids, medical advice suggests seeing your doctor or going to the emergency room to receive IV fluids.

Most adults and kids with no chronic health issues recover from norovirus with no need for hospital care. Although health agencies report thousands of outbreaks each year, the actual number of infections is estimated at millions – the majority go unreported because individuals are able to “manage their infections on their own”.

While there’s no specific treatment you can do that cuts the duration of an episode of norovirus, it’s vitally important to stay well-hydrated the entire time. “Aim to drink an equivalent volume of fluids like electrolyte solutions or plain water as you are losing.” “Crushed ice, popsicles – essentially any fluid you can tolerated that will maintain hydration.”

An antiemetic – a drug that prevents nausea and vomiting – like Dramamine may be necessary if you can’t keep liquids down. Do not, however, take medicines that stop diarrhoea, including Imodium or Pepto-Bismol. “Our body is trying to eliminate the virus, and if we keep it inside … they persist for longer periods of time.”

How Can You Avoid Getting Norovirus?

Right now, there is no a vaccine for norovirus. That’s because the virus is “notoriously hard” to grow and study in laboratory settings. It has many strains, which mutate often, making a single vaccine difficult.

Therefore, prevention relies on fundamental hygiene.

Practice Thorough Handwashing:

“To prevent or control infections, frequent hand washing is important for everyone.” “Importantly, infected individuals must not prepare or handle food, or look after other people when they are ill.”

Alcohol-based hand rub and similar alcohol-based disinfectants are not effective against this particular virus, due to its structure. “While you may use hand sanitizers in addition to handwashing, sanitizer alone does not kill norovirus against norovirus and cannot serve as a replacement for handwashing.”

Wash your hands frequently and thoroughly, with good-quality soap, for a minimum of 20 seconds.

Steer Clear of a Sick Person's Bathroom:

Whenever feasible, designate a separate bathroom for any sick person at home until they are better, and limit other contact, as suggested.

Clean Affected Items:

Disinfect hard surfaces with diluted bleach (1 cup per gallon water) alternatively full-strength 3% hydrogen peroxide, both of which {can kill|