<prompt> In control of peusis, the durg of choice for cases -ErythromycinCiprofloxacinTetracyclinePenicillin  <response>: control of peussis:- CASES:- Early diagnosis,isolation and treatment. Disinfection of discharge from nose and throat. Erythromycin is probably the drug of choice. A dose of 30-50 mgkg of body weight in 4 divided doses for 10 days. Possible alternatives are ampicillin,septran or tetracycline. Antibiotics effective when given during incubation period or in early catarrhal stage. CONTACTS:- Infants and children kept away from cases. Those known to have been in contact with whooping cough may be given prophylactic antibioticerythromycin ampicillin treatment for 10 days to prevent the infecting bacteria to become established. The best protection that can be given to infant is to administer a booster dose of DPTDT to his siblings before he is born. ACTIVE IMMUNISATION administration of DPT 3 doses intramuscularly. Staing from 6 weeks with one month interval. PASSIVE IMMUNISATION hyperimmune globulin. Reference: park;s textbook of preventive and social medicine, 23rd edition, pg no.164 