Epidemiological studies is carried for a period of -
.epidemiological studies are usually employed for a period of twice the incubation period .it is done so so thzt most of the cases and associated risk factors are identified in such a way that it may help in the interpretation of data collected and thus the epidemiological analysis. ref:park&;s textbook,ed 22,pg no 67
Incubation period
Twice the incubation period
Four times the incubation period
Half the incubation period
Epidemiology