A vaccine based on Asia1 shamir of the foot-and-mouth disease virus offers low levels of protection to pigs against Asia1/MOG/05, circulating in East Asia

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Title
A vaccine based on Asia1 shamir of the foot-and-mouth disease virus offers low levels of protection to pigs against Asia1/MOG/05, circulating in East Asia
Author(s)
H Kim; Hwi Won Seo; H S Cho; Y Oh
Bibliographic Citation
Viruses-Basel, vol. 14, no. 8, pp. 1726-1726
Publication Year
2022
Abstract
Foot-and-mouth disease (FMD) is one of the most contagious diseases in cloven hoof animals. Vaccination can prevent or control FMD, and vaccine antigens should be matched against circulating viruses. According to phylogenetic analyses, field isolates in this region belonged to genotype V and showed low genetic similarity with the Asia1 Shamir vaccine, the OIE-recommended vaccine strain. In this study, we investigated whether pigs vaccinated with the Asia1 Shamir vaccine could be protected from challenges with the Asia1/MOG/05 virus, one of the genotype V field isolates. Eight pigs were divided into either vaccinated or nonvaccinated control groups. After two vaccinations with Asia1 Shamir, both groups of pigs were challenged with the Asia1/MOG/05 field isolate at 2 weeks after the second vaccination. In the control group, symptoms appeared at 2 days post-infection (dpi). The clinical sign score peaked at 4 dpi, and this coincided with virus shedding through nasal discharge. Neutralizing antibody titers peaked at 17 dpi. In the vaccinated group, clinical signs were delayed compared with the control group, and the highest score was shown at 10 dpi accompanied with virus nasal shedding, which peaked at 11 dpi. Neutralizing antibodies were induced 2 weeks after the second vaccination and peaked at 17 dpi. In conclusion, Asia1 Shamir vaccination in pigs provided partial protection from Asia1/MOG/05 virus infection.
Keyword
Foot-and-mouth diseaseAsia1FMD vaccineViral infection
ISSN
1999-4915
Publisher
MDPI
DOI
http://dx.doi.org/10.3390/v14081726
Type
Article
Appears in Collections:
Division of Research on National Challenges > Infectious Disease Research Center > 1. Journal Articles
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