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Isolation, genetic analysis of the first Akabane virus from goat in China.

ABSTRACT: Akabane virus (AKAV) is an important insect-borne virus belonging to the genus Orthobunyavirus, the Peribunyaviridae family. An AKAV defined as GXDH 01 here, was isolated for the first time from blood from a sentinel goat in China in 2016, and its full-length open reading frames (ORFs) were sequenced in this study. Sequence analysis suggested that the isolate GXDH 01 probably had undergone a reassortment incident and acquired L segments from other strain originating from an attenuated vaccine, such as OBE-1. This study aims to provide more understanding as to the origin and epidemiology of AKAV in China.

SUBMITTER: Tang HB

PROVIDER: S-EPMC6863719 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

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Isolation, genetic analysis of the first Akabane virus from goat in China.

Tang Hai-Bo HB Ren Pengfei P Qin Shuying S Lin Jun J Bai Anbin A Qin Shaomin S Chen Fenglian F Liu Jinfeng J Wu Jianmin J

The Journal of veterinary medical science 20190805 10

Akabane virus (AKAV) is an important insect-borne virus belonging to the genus Orthobunyavirus, the Peribunyaviridae family. An AKAV defined as GXDH 01 here, was isolated for the first time from blood from a sentinel goat in China in 2016, and its full-length open reading frames (ORFs) were sequenced in this study. Sequence analysis suggested that the isolate GXDH 01 probably had undergone a reassortment incident and acquired L segments from other strain originating from an attenuated vaccine, s ...[more]

PMID: 31378772

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Project description:BackgroundGetah virus (GETV) is a neglected mosquito-borne Alphavirus that causes pyrexia, body rash, and leg oedema in horses and foetal death and reproductive disorders in pigs. Infected animals may play a critical role in the amplification and circulation of the virus. The present study aimed to investigate GETV infection in clinically infected cattle and vector mosquito species in northeastern China.ResultsSerum samples were collected from beef cattle that presented sudden onset of fever in forest grazing areas, and metagenomic sequencing was conducted, revealing 29 contigs from ten serum samples matching the GETV genome. Quantitative RT-PCR (RT-qPCR) was performed with GETV RNA from 48 beef cattle serum samples, showing that the overall prevalence of GETV in the beef cattle samples was 6.25% (3/48). Serological investigation indicated that GETV neutralizing antibodies were detected in 83.3% (40/48, 95% CI 67-100) of samples from the study region. The GETV JL1808 strain was isolated from clinically infected cattle showing fever. Sequence comparisons showed high identity with the HuN1 strain, a highly pathogenic swine epidemic isolate obtained in Hunan province in 2017, at the nucleotide level (99.5%) and at the deduced amino acid level (99.7-99.9%). The phylogenetic analysis of JL1808 clustered in Group III, and also revealed a close genetic relationship with the HuN1 strain. Additionally, about 12,000 mosquitoes were trapped in this region. The presence of GETV infection was detected in mosquitoes, suggesting that the minimum infection rate (MIR) was 1.50‰, with MIRs of 1.67‰ in Culex pseudovishnui, 1.60‰ in Culex tritaeniorhynchus, and 1.21‰ in Anopheles sinensis.ConclusionsTo the best of our knowledge, this is the first report of GETV infection in cattle. These results demonstrated that a highly pathogenic, mosquito-borne swine GETV can infect and circulate in cattle, implying that it is necessary to conduct surveillance of GETV infection in animals in northeastern China.

Dataset Information

Isolation, genetic analysis of the first Akabane virus from goat in China.

Publications

Isolation, genetic analysis of the first Akabane virus from goat in China.

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