also: ウエルシュきん
noun
Welch bacillus; Clostridium perfringens
Scientific/medical term for the bacterium Clostridium perfringens, a common cause of food poisoning and gas gangrene.
ウェルシュ菌は食中毒の原因菌の一つです。
Clostridium perfringens is one of the bacteria that cause food poisoning.