Flacherie - softening disease

Japanese: 軟化病 - なんかびょう（英語表記）flacherie

This is one of the most common diseases of silkworms. It is so named because the dead silkworms usually soften and rot. In general, the incidence rate is higher in summer, autumn, and late autumn silkworms than in spring silkworms. Depending on the cause of the disease, it is classified as infectious flacherie disease (F type), cytoplasmic (midgut type) polyhedrosis, bacterial digestive disease, fainting disease, and septicemia, and depending on the symptoms, it is classified as hollow, diarrheal, shrinking, vomiting, etc. In bacterial digestive disease, streptococci, Escherichia coli-like bacteria, Myxomycetes-like bacteria, and other bacteria are found in the digestive tract of diseased silkworms. Infectious flacherie disease and cytoplasmic polyhedrosis are caused by viruses, and they have come to be treated as viral diseases along with pustular disease.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

蚕の病気の代表的な一つ。普通，斃死蚕が軟化腐乱することからこういわれる。一般に春蚕より夏，秋，晩秋蚕に罹病率が高い。その病源によって伝染性軟化病 (F型) ，細胞質 (中腸型) 多角体病，細菌性消化器病，卒倒病，敗血症に，また病状によって空頭性，下痢性，縮小性，吐瀉性などに区別される。細菌性消化器病では連鎖状球菌，大腸菌類似菌，変形菌類似菌，その他の細菌が病蚕の消食管にみられる。伝染性軟化病と細胞質多角体病はウイルスを病源としており，膿病とともにウイルス病として扱われるようになった。

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