Incubation period of peussis is -

Ans. is 'b' i.e., 7-14 days Peussis After an incubation period of about 1-2 weeks, the disease takes a protracted course comprising three stages, - the catarrhal, paroxysmal and Convalescent - each lasting approximately two weeks. Remember o Catarrhal stage is the stage of maximum infectivity. o Maximum complications occur in Paroxysmal stage.