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What is norovirus? Norovirus is a very common virus that causes diarrhea and vomiting in humans. Noroviruses are named after the original Norwalk virus and Norwalk-like viruses. The viruses are very small and often difficult to detect. Noroviruses are commonly responsible for...

What is Hepatitis B and what are the complications of having Hepatitis B disease? Hepatitis B is one of several types of hepatitis virus that attack the liver. It is spread from person to person through contact with infected blood and body fluids in one of the following ways...