The most common symptoms of norovirus are:

• diarrhea.
• vomiting.
• nausea.
• stomach pain.

Symptoms

• vomiting.
• stomach pain.
• abdominal cramps.
• watery or loose diarrhea.
• feeling unwell and lethargic.
• fever and chills, which are usually mild.
• body aches.
• headaches.

A stomach virus or food poisoning can leave you with vomiting and diarrhea, and may cause a headache and dizziness. You might also be dehydrated from the loss of fluids.

Symptoms of gastroenteritis usually begin one or two days after infection and include: diarrhea. nausea and vomiting. headache, muscle aches, or joint aches.

Research consistently shows that approximately 5-10% of adults with COVID-19 report GI symptoms such as nausea, vomiting, or diarrhea. Typically, patients who have GI symptoms of COVID-19 will also have the more common upper respiratory symptoms that accompany COVID-19, such as a dry cough or difficulty breathing.

Norovirus infection can cause severe dehydration, malnutrition and even death, especially in people who are older or immunocompromised, or in women who are pregnant.

Diarrhoea is most likely to occur alongside other symptoms. Which symptoms these are depends on age and whether you have a localised COVID-19 affecting mostly your gastrointestinal system or an infection that affects more of your body. In adults, most of the time diarrhoea comes alongside fatigue and headaches.

The best treatment for norovirus includes: Isolating the infected person from the rest of the family to prevent further exposure; Providing plenty of gentle, clear liquids (carbonated beverages work well to settle the stomach); Introducing rice or other plain foods once the patient starts feeling better.

A person is not usually contagious during the norovirus incubation period. People infected with norovirus are usually contagious from the moment they begin feeling ill to at least 3 days after recovery. Some people may be contagious for as long as 2 weeks after recovery.

Norovirus can spread at home if the infected person shares dishes, utensils, cups, straws, cigarettes, and so on. There is the chance that the person who has norovirus could have germs on his hand and those germs can get on everything he uses. Letting the person infected with norovirus prepare food.

People infected with norovirus are contagious from the moment they begin feeling ill to at least 3 days after recovery. The virus may be shed (discharged from the body through vomit or stool) for 2 weeks or more after recovery, although it is unclear whether the virus shed during this time is infectious.