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Prevention and control of infection


condition produced when an infective agent becomes established in or on a suitable host; infections usually have signs and symptoms

Influenza, (flu)

contagious viral disease which has a sudden onset, fever and severe aches and pains


viruses, bacteria, or fungi that can not be seen with the naked eye; also called germs


transfer and infectious agent from one person or place to another


microorganisms or substances that can produce disease


microorganisms that do not cause infection

portal of entry

natural openings in the body where microorganisms can enter

portal of exit

a route taken by microorganisms leaving the body, such as blood or the natural openings of the body


a person, animal, or environment in which an infectious agent lives

susceptible host

person likely to get an infection or disease ually because body defense are weak


a type of microorganism that survives only in living things


impure or unclean

direct transmission

direct transfer of microorganisms from one person to another

indirect transmission

transmission of infection by an intermediate object, such as food, water, medical equipment, or a person's hands, into the portal of entry of a susceptible host


something that protects, or separates , a peron from an infectious microorganism

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