<prompt> Most common type of polio is -Non-paralytic polioParalytic polioAbortive illnessInapparent infection  <response>: Ans. is d i.e., Inapparent infection Clinical manifestationso Incubation period -7-14 dayso After infection, one of the following responses may occur -Enapparent subclinicat infectiono Occurs in 95 of the infected individualso They play a dominant role in spread of infection.Minor abortive illnesso In 4-8 of infectionso Fever, sore throat, headach and malaiseAseptic meningitis non-paraIytic polioo In 1 of infectionso Signs symptoms of meningitisParalytic polioo In less than 1 of caseso Flaccid paralysis with absent tendon reflexes.o Most common cause of death - Respiratory paralysis. 