Identificação genética, aspectos clínicos e epidemiológicos de um foco de anemia infecciosa equina no Estado do Rio Grande do Sul, Brasil

Ciencia Rural

article

José Conrado dos Santos Jardim¹  Paula Fonseca Finger¹  Grazielle Vieira Cristofari²  Bruno Leite Anjos¹  Carolina Kist Traesel¹  Mário Celso Sperotto Brum¹ 

[1] Universidade Federal do Pampa;Secretaria do Estadual de Agricultura

关键词: horses;    equine infectious anemia virus;    molecular epidemiology;    phylogenetic analysis;    transboundary disease;   

DOI  :  10.1590/0103-8478cr20220506

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

The study describes the genetic identification, clinical, and epidemiological characteristics of an outbreak of equine infectious anemia occurring in the state of Rio Grande do Sul, Brazil. Three animals kept in the periurban region of Uruguaiana city tested positive for the AGID test. The serology was performed as a requirement for transit. None of the animals showed clinical signs of infection, one animal was necropsied, and the others were stolen. In the post-mortem examination, no macroscopic changes were observed, and microscopically, discrete hemosiderosis was detected in fragments of the liver and spleen. Amplifying and sequencing a proviral DNA fragment in blood, spleen, and mesenteric lymph node samples confirmed EIAV infection. Phylogenetic analysis of the first sequenced EIAV sample from the Rio Grande do Sul State indicates a high similarity with other Brazilian samples. Results confirmed the viral presence in the state’s herds and described epidemiological and virological characteristics of EIA that contribute to the maintenance and dissemination of the virus in herds.

【 授权许可】

Unknown