Investigation on clinical healthy swine carrier status of Streptococcus suis in Hebei Province of China

摘要

A total of 600 samples of nose swabs collected from Hebei Province, China, were examined?by polymerase chain reaction (PCR) for the presence of?Streptococcus suis?in healthy swine?and the?serotype?were?identified.?Results showed that?148 strains (24.67%) of 600 tested were positive with?S. suis,?including?27 strains (18.24%) were identified to be type 7, 24 strains (16.22%) were type 2 and 20 strains (13.51%) were type 9. Butserotypes of other 75 strains (50.68%) were undetermined. To our knowledge, this is the first epidemiological investigation of?S. suis?in healthy swine from Hebei Province of China.