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Norovirus describes a family of about 50 viral strains that result in one miserable outcome: copious time spent in the bathroom. Each year, roughly 684 million people worldwide contract this illness.

Norovirus is a form of infectious stomach flu, essentially “an inflammation of the intestines and the colon that triggers diarrhea” and vomiting, as explained by a doctor.

Norovirus can spread year-round, it bears the nickname “winter vomiting bug” since its cases surge between late fall to February across the northern hemisphere.

Below is key information about it.

How Does Norovirus Propagate?

Norovirus is exceptionally contagious. Usually, it invades the gastrointestinal tract by way of microscopic germs originating in a sick individual's spit and/or stool. These particles can land on hands, or contaminate food or drink, eventually into the mouth – “known as the fecal-oral route”.

Particles can stay active for up to a fortnight on hard surfaces like handles or faucets, and it takes an extremely small amount to cause illness. “The required exposure for noroviruses is under 20 virus particles.” In comparison, other viruses like Covid-19 typically need an exposure of one to four hundred virus particles for infection. “During infection, has an active the illness, there’s billions of virus particles per gram of stool.”

One must also consider some risk of spread via aerosolized particles, notably if you’re in close proximity to someone while they are experiencing symptoms such as severe diarrhea or being sick.

Norovirus becomes infectious about two days before the start of illness, and people are often infectious for several days or sometimes a few weeks once they’re feeling better.

Close quarters including nursing homes, daycares and travel hubs are a “prime location for spreading the infection”. Cruise ships have a well-known history: public health agencies track dozens of norovirus outbreaks aboard vessels on a regular basis.

Tell-Tale Signs of Norovirus?

The onset of symptoms is frequently sudden, initially involving stomach cramps, sweating, chills, nausea, throwing up and “very watery diarrhoea”. Most cases are “mild” in the medical sense, which means they subside within a few days.

That said, this is a very unpleasant illness. “Those affected often feel quite exhausted; they may have a slight fever, headache. In most cases, people cannot carry out their normal activities.”

Do I Need Medical Care for Norovirus?

Annually, norovirus leads to several hundred fatalities as well as tens of thousands of hospitalizations nationally, with individuals aged 65 and older facing the highest risk. Those at greatest risk of experiencing severe norovirus are “young children less than 5 years old, and especially the elderly and those that are immunocompromised”.

Those in these vulnerable age categories can also be particularly susceptible to kidney injury because of severe fluid loss caused by profuse diarrhea. Should a person or a family member is in a higher-risk age category and is unable to keep down fluids, medical advice suggests seeing your doctor or going to a local emergency department to receive intravenous hydration.

Most adults and kids without underlying conditions recover from norovirus without hospital care. Although health agencies report several thousand of norovirus outbreaks each year, the total figure of cases is closer to millions – the majority are not reported since people are able to “manage their illness at home”.

Although there is nothing you can do to shorten the length of a bout of norovirus, it’s vitally important to remain well-hydrated the entire time. “Consume the same amount of fluids like sports drinks or plain water as the volume that comes out.” “Ice chips, popsicles – essentially anything that can be keep down to keep you hydrated.”

An antiemetic – medication that prevents queasiness and vomiting – like certain over-the-counter options could be needed if you can’t keep liquids down. Do not, however, take medicines that stop diarrhoea, including loperamide or bismuth subsalicylate. “Our body is trying to get rid of the infection, and should you trap the viruses within … they persist longer.”

What are Ways to Avoid Catching Norovirus?

At present, we don’t have a vaccine for norovirus. The reason is the virus is “incredibly difficult” to culture and study in labs. It has many strains, that evolve frequently, rendering universal immunity challenging.

That leaves fundamental hygiene.

Wash Your Hands:

“For preventing or control outbreaks, good handwashing is vital for all.” “Importantly, sick people should not prepare meals, or look after other people while sick.”

Alcohol-based hand rub and other sanitizers do not work on norovirus, 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 substitute for washing with soap.”

Wash your hands often well, using soap, for at least 20 seconds.

Steer Clear of a Sick Person's Bathroom:

If possible, set aside a separate bathroom for any sick person in your household until they are better, and minimize other contact, as suggested.

Disinfect Contaminated Surfaces:

Disinfect hard surfaces using diluted bleach (one cup per gallon of water) or full-strength three percent hydrogen peroxide, both of which {can kill|