Which of the following is false regarding propagated epidemic:
|A||It shows gradual rise and falls of very slowly|
|B||Herd immunity reduces transmission|
|C||Spreads from person to person|
|D||Secondary waves are absent|
Propagated Epidemic is generally of infectious origin and it results from person to person transmission of an infectious agent. It usually shows a gradual rise and trails off over a much longer period of time. The speed of spread depends upon herd immunity, opportunities for contact and secondary attack rate. Examples of propagated epidemic are epidemics of hepatitis A and polio.