Distribution and characterization of Streptococcus suis serotypes isolated from January 2015 to June 2020 from diseased pigs in Québec, Canada.

IF 1.1 4区农林科学 Q2 Veterinary Canadian journal of veterinary research = Revue canadienne de recherche veterinaire Pub Date : 2022-01-01

Sonia Lacouture, Yaindrys Rodriguez Olivera, Segura Mariela, Marcelo Gottschalk

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Abstract

Streptococcus suis is one of the most important swine bacterial pathogens causing economic losses. This report presents the serotype distribution of S. suis recovered from diseased pigs in Québec from January 2015 to June 2020. Serotypes 1/2 and 2 predominated, followed by serotypes 7, 3, 5, 4, 9, 1, and 14. Compared to previously reported data, very few changes could be observed concerning the serotype distribution, indicating a relative stability. Half of the untypable isolates did not belong to the species S. suis sensu stricto, as determined by recN polymerase chain reaction. Less than 10% of "real S. suis" isolates were untypable. The genetic diversity of S. suis serotypes 1, 2, and 14, as analyzed by multilocus sequence typing, was mainly represented by sequence type (ST)1, ST28, ST25, and ST94. All ST1 isolates (considered highly virulent) belonged to either serotype 1 or 14.

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2015年1月至2020年6月从加拿大quacmebec病猪中分离的猪链球菌血清型分布和特征

猪链球菌是造成经济损失最重要的猪致病菌之一。报告了2015年1月至2020年6月曲海省病猪猪链球菌血清型分布情况。以1/2和2型为主，其次为7、3、5、4、9、1和14型。与先前报道的数据相比，在血清型分布方面几乎没有变化，表明相对稳定。经聚合酶链反应(recN polymerase chain reaction)鉴定，半数未分型的分离株不属于狭义猪链球菌。不到10%的“真正的猪链球菌”分离株是不可分的。猪链球菌血清型1、2和14的遗传多样性以序列型(ST)1、ST28、ST25和ST94为主。所有ST1分离株(被认为具有高毒力)属于血清型1或血清型14。

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来源期刊

Canadian journal of veterinary research = Revue canadienne de recherche veterinaire 农林科学-兽医学

CiteScore

1.80

自引率

0.00%

发文量

审稿时长

>24 weeks

期刊介绍： The Canadian Journal of Veterinary Research, published by the Canadian Veterinary Medical Association, is Canada''s only veterinary research publication. This quarterly peer-reviewed online-only journal has earned a wide international readership through the publishing of high quality scientific papers in the field of veterinary medicine. The Journal publishes the results of original research in veterinary and comparative medicine.