Generation time in epidemiology is defind as -
. generation time is defined as the time interval between the receipt of infection by a host and maximal infectivity of that host.it is roughly equal to incubation period.but not the same.generation time refers to transmission of infection whether clinical or subclinical. ref:park&;s textbook,ed 22,pg no 96
The interval between marriage and the bih of first child
The interval of time between primary case and secondary cases
The interval of time between invasion by infectious
agent and appearance of first sign or symptom of the disease in question
Epidemiology