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Intradermal vaccination with Porcilis® Begonia can clinically protect against fatal PRV challenge with the highly virulent ZJ01 field strain

文献类型： 外文期刊

作者： Zhang, Lei 1 ; van den Born, Erwin 3 ; Segers, Ruud P. A. M. 3 ; Raes, Maurice 3 ; Di, Di 4 ; Liu, Bei-Bei 2 ; Li, Wen-Liang 2 ; Hao, Fei 2 ; Wang, Jia 2 ; Gan, Yuan 2 ; Yuan, Ting 2 ; Feng, Zhi-Xin 2 ; Liu, Fei 1 ; Shao, Guo-Qing 2 ;

作者机构： 1.Nanjing Agr Univ, Single Mol Nanometry Lab Sinmolab, Nanjing 210095, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Vet Med, Key Lab Vet Bioprod Engn, Minist Agr & Rural Affairs, Nanjing 210014, Peoples R China

3.MSD Anim Hlth, POB 31, NL-5830 AA Boxmeer, Netherlands

4.MSD Ningbo Anim Hlth Technol Co Ltd, Hangzhou Bay New Zone, Ningbo 315336, Peoples R China

5.GuoTai Taizhou Ctr Technol Innovat Vet Biol, Taizhou 225300, Peoples R China

关键词： Pseudorabies virus; Intradermal; Vaccination; Pigs; Challenge

期刊名称：MICROBIAL PATHOGENESIS （ 影响因子：3.8； 五年影响因子：4.0 ）

ISSN： 0882-4010

年卷期： 2024 年 187 卷

页码：

收录情况： SCI

摘要： Since pseudorabies (PR) re-emerged and rapidly spread in China at the end of 2011, researchers have focused on effective vaccine strategies to prevent and control pseudorabies virus (PRV) infection in pig herds. Due to the extensive application of an attenuated vaccine based on the Bartha-K61 strain isolated in Hungary in 1961 and the variation of the PRV strain, it has been suggested that traditional vaccines based on the Bartha-K61 strain offer only partial protection against variant strains. It was therefore evaluated whether the Porcilis (R) Begonia vaccine, which is based on the NIA-3 strain with deletions in the gE and TK genes, is efficacious against experimental infection with the virulent, contemporary Chinese PRV strain ZJ01. In this study, piglets were vaccinated with Porcilis (R) Begonia through either the intradermal (ID) route or the intramuscular (IM) route and subsequently challenged intranasally with strain ZJ01 at 4 weeks post-vaccination. An unvaccinated challenge group and an unvaccinated/nonchallenged group were also included in the study. All animals were monitored for 14 days after challenge. Vaccinated and negative control pigs stayed healthy during the study, while the unvaccinated control animals developed lesions associated with PRV ZJ01 challenge, and 44% of these pigs died before the end of the experiment. This study demonstrated that ID or IM vaccination of pigs with a vaccine based on the NIA-3 strain Porcilis (R) Begonia clinically protects against fatal PRV challenge with the ZJ01 strain.

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