define the term infection
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Infection is the invasion of an organism's body tissues by disease-causing agents, their multiplication, and the reaction of host tissues to theinfectious agents and the toxins they produce. Infectious disease, also known as transmissible disease or communicable disease, is illness resulting from an infection.
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an infectious agents in body tissues of the host and may lead to clinical symptoms or local cellular injury as a result of competition in metabolism, production of toxins, intracellular replication, or antigen antibody response.
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