<prompt> Median Incubation period means:-Time taken for 50 cases to occurTime between primary case and secondary caseTime between onset of infection and period of maximum infectivityMedian of several incubation periods  <response>: Median incubation period - Time taken for 50 of cases to occur. Incubation period - Time interval bw entry of organism into body till appearance of 1st signs symptoms. Serial Interval - Time interval bw primary secondary case. Generation time - time interval between entry of organism into body till its maximum infectivity. Latent period - Time interval bw onset of disease till its first detection. It is corresponding term to incubation period for non-communicable diseases. 