The correct options are
B Diphtheria
D Hepatitis B
Diphtheria is an infection caused by a bacteria, known as Corynebacterium diphtheriae. Diphtheria bacteria can survive only in human beings. Diphtheria spreads by sneezing, coughing from an affected person (patient having diphtheria bug) to a susceptible patient. The peak incidence is during autumn and winter months. The disease is highly infectious and patient remains infected with ability to transmit the germ for 2 weeks or more.