Clostridia. Ubiquitous and still lethal.
D000328:Adult; D000368:Aged; D003015:Clostridium Infections / Q000150:complications* / Q000175:diagnosis; D003016:Clostridium perfringens; D005260:Female; D005738:Gas Gangrene / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D008297:Male