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Ryoo S, Kang H, Lim DR, Kim JM, Won Y, Kim JY, King DP, Di Nardo A, Cha SH. Re-emergence of foot-and-mouth disease in the Republic of Korea caused by the O/ME-SA/Ind-2001e lineage. Front Vet Sci 2024; 11:1378769. [PMID: 38689851 PMCID: PMC11060149 DOI: 10.3389/fvets.2024.1378769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 03/21/2024] [Indexed: 05/02/2024] Open
Abstract
The O/ME-SA/Ind-2001e foot-and-mouth disease virus (FMDV) lineage is a pandemic strain that has recently become dominant within East and Southeast Asia. During May 2023, this viral lineage spread to the Republic of Korea, where 11 outbreaks were detected on cattle and goat farms located in Cheongju and Jeungpyeong. Infected animals displayed typical FMD signs including vesicular lesions with drooling and anorexia. Molecular diagnostic testing and genetic analysis (VP1 sequencing) showed that the causative FMDVs belonged to the O/ME-SA/Ind-2001e lineage and shared the closest nucleotide identity (97.95-99.21%) to viruses that have been collected from Mongolia and South-East Asian countries. Phylogenetic analyses showed that these sequences were distinct to those collected from the previous Korean O/ME-SA/Ind-2001e lineage outbreaks in 2019, demonstrating that these cases are due to a new incursion of the virus into the country. Prompt implementation of emergency vaccination using antigenically matched serotype O vaccines (r1 value: 0.74-0.93), together with intensive active surveillance on farms surrounding the infected premises has successfully prevented further spread of FMD. These recent FMD outbreaks reinforce the importance of research to understand the risks associated with transboundary pathways in the region, in order to reduce the possibility of a further reintroduction of FMD into the Republic of Korea.
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Affiliation(s)
- Soyoon Ryoo
- Foot-and-Mouth Disease Diagnostic Division, Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea
| | - Hyeonjeong Kang
- Foot-and-Mouth Disease Diagnostic Division, Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea
| | - Da-Rae Lim
- Foot-and-Mouth Disease Diagnostic Division, Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea
| | - Jae-Myung Kim
- Foot-and-Mouth Disease Diagnostic Division, Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea
| | - Youngwoo Won
- Chungcheongbuk-do Livestock and Veterinary Service, Cheongju, Republic of Korea
| | - Ji Ye Kim
- Chungcheongbuk-do Livestock and Veterinary Service, Cheongju, Republic of Korea
| | | | | | - Sang-Ho Cha
- Foot-and-Mouth Disease Diagnostic Division, Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea
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Taffarel AI, Barrios Benito MY, Hung VV, Cardillo S, Phuong NT, Caldevilla C, Galdo Novo S. Foot-and-mouth disease virus strains isolated in Vietnam during 2010-2019: genetic characterization and antigenic relatedness to the Euro SA vaccine. Arch Virol 2024; 169:44. [PMID: 38341400 DOI: 10.1007/s00705-024-05960-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 12/01/2023] [Indexed: 02/12/2024]
Abstract
Foot-and-mouth disease is a highly contagious disease that affects cloven-hoofed animals. It has an important socio-economic impact on the livestock industry because it produces a drastic decrease of productivity. The disease has been successfully eradicated from some regions, including North America and Western Europe, but it is still endemic in developing countries. Agriculture plays an important role in the national economy of Vietnam, to which animal production contributes a great proportion. The concurrent circulation of foot-and-mouth disease virus (FMDV) serotypes O, A, and Asia 1 has been detected in recent years, but serotype O remains the most prevalent and is responsible for the highest numbers of outbreaks. Appropriate vaccine strain selection is an important element in the control of FMD and is necessary for the application of vaccination programs in FMD-affected regions. Here, we present updated information about the genetic and antigenic characteristics of circulating strains, collected from endemic outbreaks involving types O and A, between 2010 and 2019. Neutralizing assays showed a good in vitro match between type O strains and the monovalent O1 Campos vaccine strain. High r1 values were obtained (above 0.7) when testing a swine serum pool collected 21 days after vaccination, but the O/VTN/2/2019 strain was an exception. An EPP estimation resulted in a median neutralizing titre of about 1.65 log10, indicating that good protection could be achieved. For type A Asia SEA 97 lineage strains, acceptable individual neutralizing titres were obtained with estimated EPP values over 80% for different combinations of vaccine strains. Taking into account that the r1 value is one tool of a battery of tests that should be considered for estimating the cross-protection of a field strain against a vaccine strain, an in vivo challenge experiment was also performed, yielding a PD50 value of 8.0. The results indicate that South American strains could be potentially used for controlling outbreaks involving these lineages. This study demonstrates the importance of considering strain characteristics when choosing vaccine strains and controls.
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Affiliation(s)
- Ana I Taffarel
- Laboratorio de Referencia OMSA Para Fiebre Aftosa, Dirección de Laboratorio Animal, SENASA, CP1640, Martínez Buenos Aires, Argentina
| | - Melanie Y Barrios Benito
- Laboratorio de Referencia OMSA Para Fiebre Aftosa, Dirección de Laboratorio Animal, SENASA, CP1640, Martínez Buenos Aires, Argentina
| | - Vo V Hung
- Department of Animal Health, Regional Animal Health Office (RAHO) No 6, Ho Chi Min, QMW4, Vietnam
| | | | - Nguyen T Phuong
- Department of Animal Health, Regional Animal Health Office (RAHO) No 6, Ho Chi Min, QMW4, Vietnam
| | | | - Sabrina Galdo Novo
- Laboratorio de Referencia OMSA Para Fiebre Aftosa, Dirección de Laboratorio Animal, SENASA, CP1640, Martínez Buenos Aires, Argentina.
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Kim DW, Cho G, Kim H, Lee G, Lim TG, Kwak HY, Park JH, Park SH. Immunogenicity and Protection against Foot-and-Mouth Disease Virus in Swine Intradermally Vaccinated with a Bivalent Vaccine of Foot-and-Mouth Disease Virus Type O and A. Vaccines (Basel) 2023; 11:vaccines11040815. [PMID: 37112726 PMCID: PMC10142530 DOI: 10.3390/vaccines11040815] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/03/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023] Open
Abstract
Following the worst outbreak of foot-and-mouth disease (FMD), a highly contagious disease in cloven-hoofed animals caused by the FMD virus, from November 2010-April 2011, the Korean government enforced a mandatory vaccination policy. A bivalent (FMD type O and A; O + A) vaccine has been recently implemented. Although the FMD outbreak was suppressed by vaccination, the intramuscular (IM) injection presents side effects. Therefore, improving FMD vaccine quality is necessary. Here, we investigated the side effects and immune efficacy of the O + A bivalent vaccine using two different routes of administration: intradermal (ID) and IM. To compare the immune efficacy of the two inoculation routes, virus neutralization titers and structural protein (antigen) levels were measured. The protective efficacy of ID vaccines was confirmed using two viruses (FMDV O/AS/SKR/2019 and A/GP/SKR/2018) isolated in the Republic of Korea. Serological analysis revealed that both animals administered by ID and IM injections exhibited equal immune efficacy. A virus challenge test in the target animal (swine) revealed no (or extremely low) clinical symptoms. Swine in the ID injected group exhibited no side effects. In conclusion, we suggest that the ID route of vaccination is an effective alternative to the existing IM route, which is associated with more frequent side effects.
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Affiliation(s)
- Dong-Wan Kim
- Center for Foot-and-Mouth Disease Vaccine Research, Animal and Plant Quarantine Agency, 177 Hyeoksin 8-ro, Gyeongsangbuk-do, Gimcheon-si 39660, Republic of Korea
| | - Giyoun Cho
- Center for Foot-and-Mouth Disease Vaccine Research, Animal and Plant Quarantine Agency, 177 Hyeoksin 8-ro, Gyeongsangbuk-do, Gimcheon-si 39660, Republic of Korea
| | - Hyejin Kim
- Center for Foot-and-Mouth Disease Vaccine Research, Animal and Plant Quarantine Agency, 177 Hyeoksin 8-ro, Gyeongsangbuk-do, Gimcheon-si 39660, Republic of Korea
| | - Gyeongmin Lee
- Center for Foot-and-Mouth Disease Vaccine Research, Animal and Plant Quarantine Agency, 177 Hyeoksin 8-ro, Gyeongsangbuk-do, Gimcheon-si 39660, Republic of Korea
| | - Tae-Gwan Lim
- Center for Foot-and-Mouth Disease Vaccine Research, Animal and Plant Quarantine Agency, 177 Hyeoksin 8-ro, Gyeongsangbuk-do, Gimcheon-si 39660, Republic of Korea
| | - Ho-Young Kwak
- Center for Foot-and-Mouth Disease Vaccine Research, Animal and Plant Quarantine Agency, 177 Hyeoksin 8-ro, Gyeongsangbuk-do, Gimcheon-si 39660, Republic of Korea
| | - Jong-Hyeon Park
- Center for Foot-and-Mouth Disease Vaccine Research, Animal and Plant Quarantine Agency, 177 Hyeoksin 8-ro, Gyeongsangbuk-do, Gimcheon-si 39660, Republic of Korea
| | - Sung-Han Park
- Center for Foot-and-Mouth Disease Vaccine Research, Animal and Plant Quarantine Agency, 177 Hyeoksin 8-ro, Gyeongsangbuk-do, Gimcheon-si 39660, Republic of Korea
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Heterologous Prime-Boost Vaccination with Commercial FMD Vaccines Elicits a Broader Immune Response than Homologous Prime-Boost Vaccination in Pigs. Vaccines (Basel) 2023; 11:vaccines11030551. [PMID: 36992134 DOI: 10.3390/vaccines11030551] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/22/2023] [Accepted: 02/22/2023] [Indexed: 03/03/2023] Open
Abstract
Three commercial vaccines are administered in domestic livestock farms for routine vaccination to aid for foot-and-mouth disease (FMD) control in Korea. Each vaccine contains distinct combinations of inactivated serotype O and A FMD virus (FMDV) antigens: O/Manisa + O/3039 + A/Iraq formulated in a double oil emulsion (DOE), O/Primorsky + A/Zabaikalsky formulated in a DOE, and O/Campos + A/Cruzeiro + A/2001 formulated in a single oil emulsion. Despite the recommendation for a prime-boost vaccination with the same vaccine in fattening pigs, occasional cross-inoculation is inevitable for many reasons, such as lack of compliance with vaccination guidelines, erroneous application, or change in vaccine types by suppliers. Therefore, there have been concerns that a poor immune response could be induced by cross-inoculation due to a failure to boost the immune response. In the present study, it was demonstrated by virus neutralization and ELISA tests that cross-inoculation of pigs with three commercial FMD vaccines does not hamper the immune response against the primary vaccine strains and enhances broader cross-reactivity against heterologous vaccine antigens whether they were applied or not. Therefore, it could be concluded that the cross-inoculation of FMD vaccines can be used as a regimen to strategically overcome the limitation of the antigenic spectrum induced by the original regimen.
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Lee SH, Kim HH, Moon SY, Kim MY, Kim SW, Park JH, Kim J. Establishment and validation of a liquid-phase blocking ELISA for the detection of antibodies elicited by the foot-and-mouth disease virus A/ASIA/Sea-97 lineage. JOURNAL OF APPLIED ANIMAL RESEARCH 2022. [DOI: 10.1080/09712119.2022.2092485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Seung Heon Lee
- Animal and Plant Quarantine Agency, Gimcheon City, Republic of Korea
| | - Ha-Hyun Kim
- Animal and Plant Quarantine Agency, Gimcheon City, Republic of Korea
| | - Seo Young Moon
- Animal and Plant Quarantine Agency, Gimcheon City, Republic of Korea
| | - Min Young Kim
- Animal and Plant Quarantine Agency, Gimcheon City, Republic of Korea
| | - Seon Woo Kim
- Animal and Plant Quarantine Agency, Gimcheon City, Republic of Korea
| | - Jong-Hyeon Park
- Animal and Plant Quarantine Agency, Gimcheon City, Republic of Korea
| | - Jaejo Kim
- Animal and Plant Quarantine Agency, Gimcheon City, Republic of Korea
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