<prompt> Incubation period helps in determining all except?Period of isolationPeriod of quarantineIdentification of source of infectionImmunization  <response>: Ans. is a i.e., Period of isolation Incubation period is useful for : - i Tracing the source of infection and contacts. ii Period of surveillance or quarantine iii Immunization iv Identification of point source or propagated epidemics v Estimating the prognosis of a disease. 