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What is What is not true about point source epidemic? and explain in detail?
.point source epidemics ,here the eriod of exposure is only brief,and simultaneous ,the resultant cases will develop within one incubation period of the disease.the curve has usually one peak.the epidemic curve rises and falls rapidly, with no secondary waves.and it tends to be explosive. ref:park&;s textbook,ed 22,pg no 62