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Chain_of_In fection ‫‬ ‫‬.ppt

The document outlines the six links in the chain of infection, which include the infectious agent, reservoir host, portal of exit, and route of transmission. It explains that the infectious agent is any disease-causing microorganism, while the reservoir host is the organism that houses these microbes. Additionally, it details how pathogens can exit the reservoir and the various methods through which transmission can occur, such as direct contact and airborne spread.

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There are six There are six links links in the chain of in the chain of infection infection : :
1st - The Infectious Agent 1st - The Infectious Agent -Any disease-causing microorganism (pathogen).
2nd - The Reservoir Host 2nd - The Reservoir Host -The organism in which the infectious microbes reside.
3rd - The Portal of Exit 3rd - The Portal of Exit -Route of escape of the pathogen from the reservoir. Examples: respiratory secretions, blood exposure, breaks in skin
4th - The Route of 4th - The Route of Transmission Transmission -Method by which the pathogen gets from the reservoir to the new host
Transmission may occur through: direct contact
air
insects