<prompt> True about corynebacterium diphtheriae ?Schick test is done for resistanceGram positive organismSchick test is an intramuscular testMost impoant treatment is antibiotic  <response>: Ans. is b i.e., Gram positive organism Corynebacterium diphtheriae is a gram positive bacillus. Schick test was an intradermal test which was used for susceptibility. Administration of diphtherial antitoxin is the most impoant element in the treatment of respiratory diphtheria. The primary goal of antibiotic therapy is to eradicate C. diphtheriae. Drugs currently used are erythromycin or procaine penicillin G. alternatives are rifampicin or clindamycin. 