<prompt> Which of the following is not pa of control measures for diphtheria-Treatment of cases with antitoxin and erythromycinTreatment of carriers with antitoxinIsolation of cases, suspected cases and carriersRegular immunization under-fives  <response>: The carriers should be treated with 10 days course of oral erythromycin, which is the most effective drug for the treatment of carriers . Ref:PARK;S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 23rd edition , Page :161 