Morales Bárbara, Ruiz Álvaro, Lacouture Sonia, Gottschalk Marcelo
Departamento de Patología y Medicina Preventiva, Universidad de Concepción, Concepción, Chile (Morales, Ruiz); Faculté de médecine vétérinaire, Université de Montréal, 3200, rue Sicotte, Saint-Hyacinthe, Québec J2S 2M2 (Lacouture, Gottschalk).
Can J Vet Res. 2015 Oct;79(4):343-6.
The characteristics of 29 Chilean field strains of Streptococcus suis recovered between 2007 and 2011 from pigs with clinical signs at different farms were studied. Serotyping with use of the coagglutination test revealed that all but 1 strain belonged to serotype 6; the remaining strain was serotype 22. All the serotype-6 strains were suilysin (hemolysin)-negative; in addition, they were found to be genotypically homogeneous by enterobacterial repetitive intergenic consensus sequence-based polymerase chain reaction (ERIC-PCR) and sensitive to ampicillin, ceftiofur, penicillin, and trimethoprim/sulfamethoxazole. The results indicate that, in contrast to what is generally observed in other countries, a single clone of S. suis was isolated from diseased pigs in the central region of Chile.
对2007年至2011年间从不同农场出现临床症状的猪身上分离出的29株智利猪链球菌田间菌株的特性进行了研究。采用协同凝集试验进行血清分型，结果显示，除1株外，所有菌株均属于6型；其余菌株为22型。所有6型菌株均为溶菌酶（溶血素）阴性；此外，通过基于肠杆菌重复基因间共有序列的聚合酶链反应（ERIC-PCR）发现它们在基因上具有同质性，并且对氨苄西林、头孢噻呋、青霉素和甲氧苄啶/磺胺甲恶唑敏感。结果表明，与其他国家普遍观察到的情况不同，从智利中部地区患病猪中分离出的猪链球菌为单一克隆。
