Norwalk Virus

The Norwalk virus, also known as norovirus, is a highly contagious agent that causes inflammation of the stomach and intestines, one of the most common causes of gastroenteritis.

Common symptoms: It usually causes vomiting, diarrhea, nausea, abdominal pain and, at times, mild fever, with a fairly sudden onset.

How it spreads: It is easily transmitted through contaminated food or water and through close contact between people, which is why handwashing is a key preventive measure.

Who to see? The general practitioner can provide guidance in most cases, paying attention to hydration. If the illness is very severe or persists, or signs of dehydration appear, seeking medical evaluation is recommended.