Gravis, Intermedius and Mitis are biotypes of:: (A) Clostridium perfringens, (B) Corynebacterium diphtheria, (C) Capnocytophaga, (D) Klebsiella
Answer is B. Ans. B. Corynebacterium diphtheriaGravis, Intermedius, Mitis and Belfanti are biotypes of Corynebacterium diphtheria. Gravis causes most severe disease.