What is Norovirus?

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The Kerala Health Department recently confirmed two cases of the gastrointestinal infection Norovirus in class 1 students in the Ernakulam district.

About Norovirus

  • The Norovirus, also known as the "winter vomiting bug," causes vomiting and diarrhoea.
  • Infection agents:  The most common infective agent is contaminated water or food.
  • The virus spreads via faeces to the mouth. Consuming contaminated food or liquids, touching contaminated surfaces or objects, or coming into direct contact with an infected person.
  • Symptoms: Acute gastroenteritis is caused by inflammation of the stomach or intestine. Diarrhoea, vomiting, nausea, and stomach ache are also symptoms. Fever, headaches, and muscle pain may also persist.
  • The symptoms usually appear 12 to 48 hours after the virus has been exposed.
  • It affects particularly children, the elderly, and people suffering from other illnesses.
  • Severity: Although these virus outbreaks are rarely severe, they can spread quickly if proper precautions are not taken.


Q1) What is a virus?

A virus is an infectious agent of small size and simple composition that can multiply only in living cells of animals, plants, or bacteria.

Source: Norovirus cases detected in Kerala: what is this virus and how dangerous is it?