Aeromonas hydrophila infection
1981
Kriengsag Saitanu | Kriengsak Poonsuk | Somchai Tuntravorasilp
Aeromonas hydrophila is a fish-pathogen microorganism. The organism could also produce diseases in reptiles, e.g. snakes and turtles, and in amphibian, e.g. frogs. The epidemic of the ulcer disease in catfishes have been studied for the last 6 months in this laboratory. The disease was observed in the fish-cultures in Rangsit, Sampran and Supanburi. The markable lesion was the center necrosis surrounded with haemorrhage. In the severe cases the flesh was sloughed and the vertebrates were exposed. The disease in the adult fishes occasionally had the primary infection in the kidney. The nodule (or nodules) was observed at the area over the anterior kidney with the characteristic of haemorrhage and then broken out to form the ulcer. In some cases the papules were developed. The mortality rate was 5-20%. Most of the organisms produced the typical lesion in fishes after I/M inoculation 24 hrs with the dosage of 8 x 10/ml. The infection of this organism was also observed in white gibbon and swine. The gibbon had the following clinical signs; lethargic, anorexia, polydipsia, diarrhea and dyspnea. The animal died 4 days after showing the signs of sickness. In the swine case, the incoordination and circular movement was observed. The post-mortem revealed meningitis. The pathology and serological studies are in progress.
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