Which of the following does not show an incubatory carrier state?: (A) Polio, (B) Diphtheria, (C) Measles, (D) Cholera
Answer is D. Incubatory carriers Can transmit the agent during the incubation period before clinical illness begins. Eg:Measles, Mumps, Polio, Peussis, Influenza, Diphtheria and Hepatitis B =In cholera, convalescent carriers are seen.