Genetic characterization of chicken anemia viruses newly isolated from diseased chicks in Japan in 2020

Autor: Hieu Van DONG, Giang Thi Huong TRAN, Aoi KUROKAWA, Yu YAMAMOTO, Yohei TAKEDA, Haruko OGAWA, Kunitoshi IMAI
Rok vydání: 2022
Předmět:
Zdroj: Journal of Veterinary Medical Science. 84:166-170
ISSN: 1347-7439
0916-7250
Popis: In this study, a total of nine chicken samples obtained from two broiler flocks in Oita and Tottori prefectures in 2020 were examined for Chicken anemia virus (CAV) infection. The samples were collected from clinically suspected flocks and diseased chickens. The CAV genome was detected in all nine samples tested by real-time PCR. Phylogenetic analyses and sequence comparisons of the full-length VP1 gene sequences indicated that all the Japanese CAV strains obtained in this study formed a similar cluster of genotype III and shared high nucleotide (99.62-100%) identity. The current Japanese CAV strains were closely related to Chinese CAV strains but not related to vaccine strains. One positive selection site of VP1 was detected among the Japanese CAV strains.
Databáze: OpenAIRE