Propagative epidemic, transmission is -: (A) Person to person, (B) Animal to person, (C) Water to person, (D) Fomite to person
Answer is A. .a propagated epidemic is usually of infectious origin.its mode of transmission is from person to person always.the epidemic usually shows a gradual rise and tails off over a much longer time.transmission continues untill the number of susceptibles depleted.the speed of spread depends upon herd immunity ,oppounities for contact and secondary attacks rates.occur commonly in aggregated populations. ref:park&;s textbook,22 nd ed,pg 63