All of the following are true about the Herd Immunity for infectious diseases except :

A. It refers to group protection beyond what is afforded by the protection of immunized individuals

B. It is likely to be more for infections that do not have a sub-clinical phase

C. It is affected by the presence and distribution of alternative animal hosts

D. In the case of tetanus it does not protect the individual

Correct Answer: It is likely to be more for infections that do not have a sub-clinical phase

Description: Occurrence of clinical and subclinical infection in a community is responsible for herd immunity. Herd immunity is more for infections that have a subclinical phase. Ref: Park's Textbook Of Preventive And Social Medicine By K. Park, 19th Edition, Page 96; Park's Textbook Of Preventive And Social Medicine By K. Park, 18th Edition, Page 95

Category: Social & Preventive Medicine

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