Biological characters and identification of the pathogen contributing to the outbreaking epidemic toxic shock like syndrome

Objective In the summer of 1998, a pig infection disease outbroke in Jiangsu province of China. Many pigs and some men died. This study is to illuminate the cause, control and prevention of the disease. Methods The present research compared the biochemical characters of 3 isolated strains through protein fingerprint by PAGE and DNA fingerprint. Results The results showed that 3 isolated strains belonged to one colonal strain and came from the same original strain with same protein compound and DNA fingerprint. However, the 3 isolated strains were different from standard control strains.Conclusion It asserted the conclusion of epidemic investigation that the epidemic disease caused by diseased pigs and pathogen was transmitted to men from pigs. The pathogen was streptococcus suis Ⅱ .