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SubjectsMicrobiologyMicrobiology & Infection ControlChapter 2 — Infection Control & Sterilization2.1 Chain of Infection

Topic 2.1 · Microbiology · Infection Control & Sterilization

Chain of Infection

The chain has six links: agent, reservoir, portal of exit, mode of transmission, portal of entry and susceptible host.

Breaking any link prevents infection.

Important Facts

Links in chain: Six links
Prevention: Break any link

Key Points

Hand hygiene breaks transmission
Aseptic technique protects the host

Exam-Oriented Notes

»Memorise the six links in order

Related topics

2.2 Sterilization & Disinfection 2.3 Asepsis

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