Pseudorabies Virus Variant in Bartha-K61–Vaccinated Pigs, China, 2012
The widely used pseudorabies virus (PRV) Bartha-K61 vaccine has played a key role in the eradication of PRV. Since late 2011, however, a disease characterized by neurologic symptoms and a high number of deaths among newborn piglets has occurred among Bartha-K61–vaccinated pigs on many farms in China...
Main Authors: | , , , , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Centers for Disease Control and Prevention
2013-11-01
|
Series: | Emerging Infectious Diseases |
Subjects: | |
Online Access: | https://wwwnc.cdc.gov/eid/article/19/11/13-0177_article |
id |
doaj-73df674bbead4a09a63e9fa8e5aa48e6 |
---|---|
record_format |
Article |
spelling |
doaj-73df674bbead4a09a63e9fa8e5aa48e62020-11-24T21:44:22ZengCenters for Disease Control and PreventionEmerging Infectious Diseases1080-60401080-60592013-11-0119111749175510.3201/eid1911.130177Pseudorabies Virus Variant in Bartha-K61–Vaccinated Pigs, China, 2012Tong-Qing AnJin-Mei PengZhi-Jun TianHong-Yuan ZhaoNa LiYi-Min LiuJia-Zeng ChenChao-Liang LengYan SunDan ChangGuang-Zhi TongThe widely used pseudorabies virus (PRV) Bartha-K61 vaccine has played a key role in the eradication of PRV. Since late 2011, however, a disease characterized by neurologic symptoms and a high number of deaths among newborn piglets has occurred among Bartha-K61–vaccinated pigs on many farms in China. Clinical samples from pigs on 15 farms in 6 provinces were examined. The PRV gE gene was detectable by PCR in all samples, and sequence analysis of the gE gene showed that all isolates belonged to a relatively independent cluster and contained 2 amino acid insertions. A PRV (named HeN1) was isolated and caused transitional fever in pigs. In protection assays, Bartha-K61 vaccine provided 100% protection against lethal challenge with SC (a classical PRV) but only 50% protection against 4 challenges with strain HeN1. The findings suggest that Bartha-K61 vaccine does not provide effective protection against PRV HeN1 infection.https://wwwnc.cdc.gov/eid/article/19/11/13-0177_articlepseudorabies virusvirus variantvirulentimmune evasionvirusespigs |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tong-Qing An Jin-Mei Peng Zhi-Jun Tian Hong-Yuan Zhao Na Li Yi-Min Liu Jia-Zeng Chen Chao-Liang Leng Yan Sun Dan Chang Guang-Zhi Tong |
spellingShingle |
Tong-Qing An Jin-Mei Peng Zhi-Jun Tian Hong-Yuan Zhao Na Li Yi-Min Liu Jia-Zeng Chen Chao-Liang Leng Yan Sun Dan Chang Guang-Zhi Tong Pseudorabies Virus Variant in Bartha-K61–Vaccinated Pigs, China, 2012 Emerging Infectious Diseases pseudorabies virus virus variant virulent immune evasion viruses pigs |
author_facet |
Tong-Qing An Jin-Mei Peng Zhi-Jun Tian Hong-Yuan Zhao Na Li Yi-Min Liu Jia-Zeng Chen Chao-Liang Leng Yan Sun Dan Chang Guang-Zhi Tong |
author_sort |
Tong-Qing An |
title |
Pseudorabies Virus Variant in Bartha-K61–Vaccinated Pigs, China, 2012 |
title_short |
Pseudorabies Virus Variant in Bartha-K61–Vaccinated Pigs, China, 2012 |
title_full |
Pseudorabies Virus Variant in Bartha-K61–Vaccinated Pigs, China, 2012 |
title_fullStr |
Pseudorabies Virus Variant in Bartha-K61–Vaccinated Pigs, China, 2012 |
title_full_unstemmed |
Pseudorabies Virus Variant in Bartha-K61–Vaccinated Pigs, China, 2012 |
title_sort |
pseudorabies virus variant in bartha-k61–vaccinated pigs, china, 2012 |
publisher |
Centers for Disease Control and Prevention |
series |
Emerging Infectious Diseases |
issn |
1080-6040 1080-6059 |
publishDate |
2013-11-01 |
description |
The widely used pseudorabies virus (PRV) Bartha-K61 vaccine has played a key role in the eradication of PRV. Since late 2011, however, a disease characterized by neurologic symptoms and a high number of deaths among newborn piglets has occurred among Bartha-K61–vaccinated pigs on many farms in China. Clinical samples from pigs on 15 farms in 6 provinces were examined. The PRV gE gene was detectable by PCR in all samples, and sequence analysis of the gE gene showed that all isolates belonged to a relatively independent cluster and contained 2 amino acid insertions. A PRV (named HeN1) was isolated and caused transitional fever in pigs. In protection assays, Bartha-K61 vaccine provided 100% protection against lethal challenge with SC (a classical PRV) but only 50% protection against 4 challenges with strain HeN1. The findings suggest that Bartha-K61 vaccine does not provide effective protection against PRV HeN1 infection. |
topic |
pseudorabies virus virus variant virulent immune evasion viruses pigs |
url |
https://wwwnc.cdc.gov/eid/article/19/11/13-0177_article |
work_keys_str_mv |
AT tongqingan pseudorabiesvirusvariantinbarthak61vaccinatedpigschina2012 AT jinmeipeng pseudorabiesvirusvariantinbarthak61vaccinatedpigschina2012 AT zhijuntian pseudorabiesvirusvariantinbarthak61vaccinatedpigschina2012 AT hongyuanzhao pseudorabiesvirusvariantinbarthak61vaccinatedpigschina2012 AT nali pseudorabiesvirusvariantinbarthak61vaccinatedpigschina2012 AT yiminliu pseudorabiesvirusvariantinbarthak61vaccinatedpigschina2012 AT jiazengchen pseudorabiesvirusvariantinbarthak61vaccinatedpigschina2012 AT chaoliangleng pseudorabiesvirusvariantinbarthak61vaccinatedpigschina2012 AT yansun pseudorabiesvirusvariantinbarthak61vaccinatedpigschina2012 AT danchang pseudorabiesvirusvariantinbarthak61vaccinatedpigschina2012 AT guangzhitong pseudorabiesvirusvariantinbarthak61vaccinatedpigschina2012 |
_version_ |
1725910802611830784 |