Which is the most common causative agent of gas gangrene?: (A) Cl. histolyticum, (B) Cl. novyi, (C) Cl. septicum, (D) Cl. perfringens
Answer is D. Clostridium perfringens is the most common causative agent of gas gangrene. Gas gangrene: Established agents: C. perfringens (Most Common, 60-80%) and C. novyi and C. septicum (20-40%). Probable agents: C. histolyticum, C. sporogenes, C. fallax, C. bifermentans, C. sordellii, C. aerofoetidum and C. teium.