Pandemics, diseases which spread to most populated regions with a high degree of mortality, have been recorded several times in world history, the first being the Plague of Justinian in 541 CE. The Black Death, also known as the Second Pandemic, was one of the most catastrophic events in human history.
Infectious diseases are transmitted from person to person by direct or indirect contact. Old people, pregnant people, and infants can get sick easier. Certain types of viruses, bacteria, parasites, and fungi can all cause infectious disease
The liver's main function is to process the nutrients absorbed from the small intestine
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