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date: 03 March 2021


A Dictionary of Epidemiology

Miquel Porta

1. The presence of an Infectious Agent, a toxic, or an otherwise harmful agent (radioactive material, other biological or chemical compounds) on or in the body—or in clothes, bedding, toys, medical devices, surgical instruments or dressings, other objects; in air, water, and food; or on buildings or land. Contamination of a body surface does not imply a ...


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