Microbiology General b707df23 Clinical diphtheria is caused by - A Corynebacterium diphtheriae B Corynebacterium parvum C C. ulcerans D Streptococcus pyogenes High-Yield Explanation Ans. is 'a' i.e., Corynebacterium diphtheriae Diphtheria is a nasophaiyngeal & skin infection caused by Corynebacterium diphtheriae