冀东地区猪链球菌病流行病学调查

Epidemiology investigation of swine Streptococcus in the east of Hebei province

为了解猪链球菌病在冀东地区的流行规律，对从秦皇岛、唐山等地区分离获得的48株猪源链球菌，用国际通用的标准链球菌兰氏血清分群诊断试剂进行了鉴定，结果表明，猪源链球菌血清群以兰氏D群为主（23／48，占47．9％），其次为C群（18／48，占38．5％）。同时，通过对280例猪链球菌病临床病例资料统计分析及流行病学调查，结果显示，猪链球菌病在冀东地区广泛存在，尤以寒冷季节多发，主要病型包括败血型、脑膜炎型和关节炎型；猪链球菌病发病率为15．2％-81％，死亡率为8．1％-50．4％。

280 suspected cases of swine Streptococcus were from Qinhuartgdao,Tangshanand, were located in the east of Hebei province. Out of which 48 strains swine Streptococcus were isolated and tested through Lancefield serum group, combined clinical case dada and epidemiology investigation. The results showed that swine Streptococcus were mainly caused by such groups of streptococcus as groups D （47.9%）, group C（38.5%）. In addition, swine Streptococcus existed extensivly in the east of Hebei province, often occurred in the cold season. The main types of disease consisted of the Hematosepsis type, meningitis type and arthrophlogosis type, morbidity and Mortality are 15.2 % - 81%, 8.1% - 50.4 % respectively.