猪链球菌2型上海分离株的病原特性鉴定

Identification of the Isolate of Streptococcus Suis Type 2 in Shanghai

1997年底上海地区分离到一株猪链球菌 2型 ,结合培养特性、生化特性、血清定型及动物试验等对其进行了鉴定。其形态、染色及培养基本符合链球菌的特点 ,具有 β溶血。生化试验结果不稳定。用国际通用的链球菌A_G乳胶分型诊断液检测分离株 ,不在其检测范围。但能凝集猪链球菌 2型标准阳性血清。人工接种 4日龄乳鼠和猪有致病性。本试验对上海地区首次分离的猪链球菌 2型菌株进行了病原特性鉴定 ,证实猪链球菌 2型在上海存在 ,为今后防治猪链球菌病提供了可靠的科学依据。

One isolate of Streptococcus.Suis type 2 was obained from diseased pigs with septicemia in Shanghai province in the end of 1997.The morphological,cultural and biochemistry characters indicated that the isolated bacteria belonged to genus Streptococcus.In addition,the API 20 Strep systerm was reconfirmed the above result.Furthermore,the isolate could be agglutinated by the antisrum of Strep.suis type 2,but not by the Lancefild group A_G latex diagnostic kit.The isolate demonstrated pathogencity to 4 days young mouse and pig,but not to rabbit and mouse.