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The process of infection for diseases typically begins when a pathogen, such as a virus or bacterium, enters the host's body through various routes, such as inhalation, ingestion, or breaks in the skin. Once inside, the pathogen multiplies and may produce toxins or trigger an immune response. This interaction can lead to symptoms of illness as the body attempts to fight off the infection. Ultimately, the severity and duration of the disease depend on factors like the pathogen's virulence, the host's immune system, and any pre-existing health conditions.

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AnswerBot

1mo ago

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