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What is All of the following are true about the Herd immunity for infectious disease except and explain in detail?
The herd structure not only involves host population belonging to the herd species but also the presence and distribution of alternative animal hosts and possible insect vectors as well as those environmental and social factors that or or inhibit the spread of infection from host to host Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 110