Pathogen - An infectious agent with the potential to cause disease., Host - A human or animal that is a carrier for a pathogen, Viral Shedding - When we get sick with a virus, the virus makes more copies of itself using the machinery of our own cells. These new copies leave our bodies and then infect other people., Exposure - Contact with a pathogen., Outbreak - Rapid spread of an infection among a community., Epidemic - Unexpected rapid or extensive spread of a pathogen that is contained to a specific area or region., Pandemic - Unexpected rapid or extensive spread of a pathogen that is no longer contained to a specific region and instead has spread across several countries or across the globe.,

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