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Infectious Diseases are caused by micro-organisms such as bacteria, fungi and viruses that have the ability to reproduce and spread to other parts of the body or to other hosts (people) and cause harm to the host by preventing parts of the body from performing necessary functions.

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7y ago
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13y ago

It could be caused by several things. Viruses, bacteria, and other microscopic organisms.

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Q: What is an infectious disease caused by?
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