Gas gangrene is a deep wound infection caused by Clostridium bacteria that destroys tissue. Symptoms include high fever, shock, massive tissue destruction, blackening of skin around the wound, severe pain, and blisters forming with gas bubbles. Those at risk are people with diabetes, blood vessel disease, or colon cancer, or those with wounds exposed to contaminated materials or recent trauma. Treatment involves high doses of antibiotics like penicillin, removing dead tissue, or amputating limbs. Prevention includes cleaning wounds, avoiding contamination, and treating circulation issues.