What is true regarding Diphtheria ?: (A) Nasal carriers are more dangerous than cases, (B) Immunization prevent carrier state, (C) Cases are most impoant as source of infection, (D) Hemagglutination test has been replaced by Schick test
Answer is A. Diphtheria Causative agent - Corynebacterium diphtheria, a gram + bacilli, non-motile organism . Incubation period 2-6 days Immunization does not prevent carrier state. Carriers are more impoant source of infection (dangerous) than cases.