Learning Objectives for the Lecture:
At the end of the lecture the student is going to be able to:
1. Define communicable and non-communicable diseases.
2. Describe the chain of infection.
3. Describe the links in the chain of infection.
Communicable Diseases
Communicable Diseases: They are diseases that spread by direct contact from infected person to a susceptible host.
Chain of infection: Series of events or conditions that lead to the development of communicable diseases.
Links in the chain are; the infectious agent (Pathogenic Microorganism), the reservoir, the agent’s portal of inters the mode of transmission of the agent, a susceptible host, and the agent’s portal of exit.
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