Two weeks ago your nephew came down with the chickenpox while visiting. now you have itchy, crusted spots on your arms and you feel terrible. you probably were infected with the chickenpox virus when your nephew was there but did not get sick until now because of the

It is because of the incubation period. The natural incubation period is the time taken by a living being to finished its advancement in the conclusive host. The extraneous hatching time frame is the time taken by a living being to finished its advancement in the halfway host.