Social & Preventive Medicine Epidemiology 61f6433c

Virulence of a biological agent is defind as -

Ability of the agent to invade and multiply in host

Propoion of clinical cases resulting in severe clinical manifestation

Ability of the agent to induce a clinically apparent illness

Propoion of clinical cases in a virgin population

High-Yield Explanation

For an infectious agent, infectivity refers to the propoion of exposed persons who become infected. Pathogenicity refers to the propoion of infected individuals who develop clinically apparent disease. Virulence refers to the propoion of clinically apparent cases that are severe or fatal. Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 43

Virulence of a biological agent is defind as -

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