Incubation period of Diptheria is: (A) 2 -6 days, (B) 2 - 6 hours, (C) 2 - 6 weeks, (D) 2 - 6 months
Answer is A. The incubation period in diphtheria is commonly 3-4 days. In some cases sho as a day. In carriers, the incubation period may be very prolonged. Reference: Textbook of Microbiology; Anathanarayan and panicker's; 10th edition; Page no: 240