BPK 140 Chapter Notes - Chapter 3: Pasteurization, Erythromycin, Botulism

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3. 1 overview: most infectious diseases are communicable. 1: communicable capable of being passed from one person (or animal) to another, example: if a person on the bus sneezes in your face, you might catch a communicable disease such as a cold or the flu. Incidence of and mortality from infectious diseases has dropped dramatically in canada and other developed countries in the last 100 years. Incidence the number of new cases of a condition per year, often expressed as a rate: example: per 100,000 population, diseases remain one of the major public health challenges in developing countries. Infectious diseases are characterized by infection and are usually accompanied by local cellular injury. 3. 3. 1 natural defenses against infection: our bodies have several other methods for protecting us against infection in the course of daily life: If the same pathogen enters the body again, these cells quickly recognize and neutralize it, often before it can cause an infection.

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