Investigation of choice of diphtheria carrier is:
Ans. is 'a' i.e., Throat Swab CultureRef: Park, 24th/e. p. 536Carriers are detected by cultural methods - swabs are taken from nose and throat and it is examined by culture methods for diphtheria bacilli.Asymptomatic Carriers and Contacts: All carriers and contacts of persons carrying a toxigenic strain should receive antibiotic prophylaxis: Benzathine penicillin G (600,000 units for persons younger than 6 years old and 1,200,000 units for those 6 years old and older). OrA 7- to 10-day course of oral erythromycin (40mg/kg/day for children and 1g/day for adults). The immunization history of all exposed individuals should be established and updated. Immunized individuals receive a single reinforcing dose according to age. Patients should be kept under surveillance and antitoxin treatment should be given at first signs of illness.
Throat Swab Culture
Gram's stain
Albert stain
Zeil Neelsen stain
Bacteria