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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 knee is were most injures happen. ways to prevent them is to wear knee pads and such so if you trip and fall.
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most people carry harmful bacteria and can transport them to food touching your nose, hair can spread bacteria and cause contamination
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The lungs are separated by the mediastinum. - c.