![]() There is no vaccine against norovirus infection. This can be done by drinking fluids or re-hydration solution or in severe cases by intravenous infusion in hospital.Īntibiotics have no effect on this illness as it is caused by a virus. Instead treatment consists of relieving the symptoms and replacing the fluids lost by vomiting and diarrhoea. Infants, the elderly and those with other health problems may require medical attention due to the risk of dehydration. Symptoms last for 1 to 3 days and then resolve. Symptoms start suddenly and include projectile vomiting, watery non-bloody diarrhoea, abdominal cramps, nausea and sometimes a mild fever. Symptoms usually start 12 to 48 hours after the virus enters the body. ![]() Norovirus infection can very quickly spread in places such as nursing homes, hospital wards, children's nurseries and schools, and on cruise ships. Shedding of viruses may continue after symptoms have resolved, usually for 48 to 72 hours, but it may be longer. Only a small number of particles are needed to cause infection. Those infected shed billions of virus particles in their vomit and diarrhoea. Contamination of surfaces (for example, door handles or tables) by virus particles can also lead to infection – during eating or drinking hands that have touched these surfaces transfer the virus into the mouth. ![]() Noroviruses are spread directly between people or by consuming food and water contaminated with the virus particles. They occurs worldwide and affects all age groups. Noroviruses are a group of viruses that cause winter vomiting disease, summer vomiting disease, Norwalk virus disease or epidemic viral gastroenteritis.
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