猪瘟继发细菌性感染的诊断

Diagnosis of swine fever complicated with bacterial infection

:1999年 5月 ,惠水及印江县养猪场爆发一种以急性经过、高热稽留、死亡率高、淋巴结及肾脾出血性变化显著、盲肠末端及回盲瓣附近有钮扣状溃疡等为特征的传染病。为快速、准确地对病猪进行诊断 ,以提出有效的防治措施 ,通过流行病学调查、病理剖检、病毒抗原测定及细菌学检验 ,确诊本次疫病为猪瘟继发细菌感染所致 ,其中猪瘟病毒荧光抗原的测定结果表明 ,肠系膜淋巴结、脾和肾的特异性荧光斑点多且亮度最强 ;肝的特异性荧光较弱。印江养猪场无并发感染 ,死亡率为 2 9% ;惠水养猪场由于致病性葡萄球菌继发感染 ,死亡率上升至 35%。

On april 1999 two pig farms broke out an infectious disease which was charaterized by acuteness,fever,high mortality,hemorrhage of lymphatic node,kidney and spleen,ulcers of caecum and ileum.The affected pigs were examined epidemiologically,pathologically,bacteriologically and serologically and the disease was diagnosed as swine fever complicated with staphylococcosis.In immuno-fluorescence assay the specific fluorescence spots were very strong in lymphatic node,spleen and kidney,while it was slightly weak in liver. One pig farm didn't occour bacterial coinfection and the mortality reached 29%. The other suffered from coinfection of staphylococcus and the mortality was up to 35% .