This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
All of the following are true about the Herd Immunity for infectious diseases except : 
Select and explain. 
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
B: It is likely to be more for infections that do not have a sub-clinical phase
Answer: B: It is likely to be more for infections that do not have a sub-clinical phase 
Explanation: 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