True about OPT' ail except:
Ans. a. Disease in very fatal and /or easily curable Prevalence (P): Incidence (I) x Duration (D) Q Incidence reflects causal factorsdeg Duration reflects the prognostic factorsdeg If the prevalence is very low, then either incidence is low or duration is shodeg . Duration is sho if the disease is easily curable or very fatal
We get quick immune response
It is a live vaccine
It is used in epidemic
Maternal antibody interferes with immune response