A gram-positive rod-shaped bacterium that forms large, oval spores. It is also known as Clostridium perfringens. It has no flagella. Types A to F are known. It is the cause of bacterial food poisoning, and when caused by heat-resistant type A bacteria, symptoms begin with diarrhea and abdominal pain after an incubation period of 8 to 22 hours (average 12 hours). Nausea and vomiting are rare, and fever does not exceed 38°C. Symptoms are generally mild, with complete recovery within 1 to 2 days. It is distributed in the intestines of humans and animals, as well as in soil and water. [Masami Soneda] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
卵円形の大形の胞子(芽胞)を形成するグラム陽性の桿(杆)菌(かんきん)。ウェルチ菌ともいう。鞭毛(べんもう)はない。A~F型菌が知られている。細菌性食中毒の原因菌で、症状は耐熱性A型菌による場合は、潜伏期間は8~22時間(平均12時間)で、下痢、腹痛に始まる。吐き気、嘔吐(おうと)は少なく、発熱も38℃を超えない。概して軽症で、1日から2日で完全に回復する。人間や動物の腸管のほか、土壌、水などに分布する。 [曽根田正己] 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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