Shoest incubation period is seen with: (A) Influenza, (B) Hepatitis B, (C) Hepatitis A, (D) Rubella
Answer is A. Influenza has an incubation period of 18 to 72 hours Incubation period of :- Hepatitis A : 10 to 50 days Hepatitis B : 30 to 180 days Rubella : 2 to 3 weeks Ref : Park&;s Textbook of Preventive and Social Medicine; 23rd edition