搾乳牛における Salmonella Heidelberg および Salmonella Infantis の集団感染 [in Japanese] Salmonella Heidelberg and Salmonella Infantis Infections in Dairy Cows [in Japanese]
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飼養頭数89頭の農家で妊娠牛1頭が下痢・流産した後1週間以内に, 搾乳牛4頭が発熱, 食欲廃絶, 下痢を呈して削痩, 泌乳量が激減した.発症牛4頭と他の成牛9頭から<I>Salmonella</I> Heidelberg (SH) が, 発症牛1頭と他の成牛5頭からはS. Infantis (SI) が分離された.両菌とも多くの抗菌剤に感受性を示し, 牛由来, 環境由来のSH株は同じプラスミドパターンを示したが, SIはプラスミドを保有していなかった.多くの環境材料からも両菌が分離されたが, 飼料, 哺育牛, また捕獲カラスから両菌は分離されなかった.
At a dairy farm with 89 heads within a week after a pregnant cow suffered from diarrhea and had abortion, dairy cows became feverish, anorectic, and emaciated, suffering from diarrhea with remarkable decrease in milk yield. <I>Salmonella</I> Heidelberg (SH) was isolated from 4 diseased cases and 9 non-diseased adults, and S. Infantis (SI) was from 1 diseased and 5 non-diseased cases. The isolates were sensitive to many antibacterial agents, and the SH isolates from animals and environmental samples showed the same plasmid patterm, while the SI isolates had no plasmids. The organisms were isolated from many environmental samples but not from nursing cows and feed. Both organisms were not isolated from captured crows.
- Journal of the Japan Veterinary Medical Association
Journal of the Japan Veterinary Medical Association 49(3), 164-167, 1996-03-20
Japan Veterinary Medical Association