中文摘要：

为了解广东地区猪群中猪链球菌（Streptococcus suis，SS）的流行情况，本研究对在广东地区养殖场采集的228份发病猪群样品及698份健康猪群样品（包括455份鼻拭子样品及243份屠宰场扁桃体样品）进行了SS携带情况的统计分析。结果显示，发病猪群SS的阳性率为82.02%（187/228），健康猪群的SS阳性率为42.20%（192/455），其中屠宰场屠宰猪群的SS阳性率为32.10%（78/243）。将从发病猪群分离到的187株SS及健康猪群（含养猪场和屠宰场）分离得到的154株SS进行血清型定型分析，结果显示，发病猪群共检测到11个血清型，包括SS1、SS2、SS3、SS4、SS7、SS8、SS9、SS16、SS19、SS29和SS31型，主要以SS2、SS3和SS19型为主，分别占16.58%、9.63%和7.49%；其次为SS7型（6.95%）和SS9型（5.34%），未定型菌株占48.66%；健康猪群共检测到17个血清型，包括SS2、SS3、SS4、SS5、SS7、SS8、SS9、SS10、SS12、SS15、SS16、SS17、SS19、SS21、SS23、SS29和SS30型，主要以血清型SS2和SS29型为主，分别占18.83%和14.94%，其次为SS16型（6.50%），未定型菌株占31.82%。

英文摘要：

To investigate the epidemics of Streptococcus suis in Guangdong province, 228 samples from infected pigs,and 698 samples from healthy pigs including 243 samples from tonsils of slaughtered pigs and 455 nasal swabs of healthy pigs were analyzed.The results showed that the positive rate of Streptococcus suis of infected,healthy and slaughtered pigs were 82.02%（187/228）,42.20%（192/455） and 32.10%（78/243）,respectively.187 strains of Streptococcus suis were isolated from infected pigs and serotyped in 11 serotypes,including serotype SS1,SS2,SS3,SS4,SS7,SS8,SS9,SS16,SS19,SS29 and SS31, in which serotype SS2（16.58%）,SS3（9.63%） and SS19 （7.49%） were dominant,flowed by SS7（6.95%）and SS9（5.34%）,and 48.66% strains were non-typabled.Meanwhile,154 strains of Streptococcus suis from healthy swine（including farms and slaughter houses） were classified into 17 serotypes,including serotype SS2,SS3,SS4,SS5,SS7,SS8,SS9,SS10,SS12,SS15,SS16,SS17,SS19,SS21,SS23,SS29 and SS30,in which SS2（18.83%） and SS29（14.94%）were dominant,flowed by SS16（6.50%） and 31.82% strains were non-typabled.