Introduction
Noroviruses are part of a group of viruses that are the most common cause of gastroenteritis (stomach bugs). Noroviruses are som ... » Read on
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Introduction
Flu pandemics are natural events that occur from time to time. Last century, there were flu pandemics in 1918, 1957 and 1968, wh ... » Read on
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Introduction
Diphtheria is a serious and highly contagious disease caused by bacteria called Corynebacterium diptheriae. Thi ... » Read on
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