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Cyril G Gay
Animal Production and Protection
National Program Leader

Phone: (301) 504-4786
Fax: (301) 504-4873

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National Program Leader For:


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Novel hyperimmune egg yolk IgY antibodies developed against protective antigens of Eimeria and Clostridium perfringens protect against necrotic enteritis - (Peer Reviewed Journal)
Confirming the absence of parental African swine fever virus as a potential contaminant of recombinant live attenuated ASF vaccines Reprint Icon - (Peer Reviewed Journal)
Velazquez Salinas, L., Ramirez Medina, E., Rai, A., Pruitt, S.E., Vuono, E., Espinoza, N.N., Gay, C.G., Witte, S.B., Gladue, D.P., Borca, M.V. 2023. Confirming the absence of parental African swine fever virus as a potential contaminant of recombinant live attenuated ASF vaccines. Biologicals. 3;83:101685. https://doi.org/10.1016/j.biologicals.2023.101685.
Orally delivered bacillus subtilis expressing chicken NK-2 peptide stabilizes gut microbiota and enhances intestinal health and local immunity in coccidiosis-infected broiler chickens Reprint Icon - (Peer Reviewed Journal)
Wickramasuriya, S.S., Park, I., Lee, Y., Richer, L.R., Przybyszewski, C., Gay, C.G., Van Oosterwijk, J.G., Lillehoj, H.S. 2023. Orally delivered bacillus subtilis expressing chicken NK-2 peptide stabilizes gut microbiota and enhances intestinal health and local immunity in coccidiosis-infected broiler chickens. Poultry Science. https://doi.org/10.1016/j.psj.2023.102590.
Evaluation of the safety profile of the ASFV vaccine candidate ASFV-G-I177L Reprint Icon - (Peer Reviewed Journal)
Xuan, T., Le Thi Thu, P., Nguyen Quang, H., Do Thanh, T., Nguyen Van, D., Pham Hào, Q., Quách Võ, N., Gay, C.G., Gladue, D.P., Borca, M.V. 2022. Evaluation of the safety profile of the ASFV vaccine candidate ASFV-G-I177L. Viruses. https://doi.org/10.3390/v14050896.
African swine fever virus vaccine candidate ASFV-G-¿I177L efficiently protects European and native pig breeds against circulating Vietnamese field strain. Reprint Icon - (Peer Reviewed Journal)
Tran, X., Le Thi Thu, P., Nguyen Quang, H., Do Thanh, T., Nguyen Van, D., Gay, C.G., Borca, M.V., Gladue, D.P. 2021. African swine fever virus vaccine candidate ASFV-G-I177L efficiently protects European and native pig breeds against circulating Vietnamese field strain. Transboundary and Emerging Diseases. https://doi.org//10.1111/tbed.14329.
Bacillus subtilis expressing chicken NK-2 peptide protects against Eimeria acervulina challenge infection in broiler chickens Reprint Icon - (Peer Reviewed Journal)
Wickramasuriya, S.S., Park, I., Van Oosterwijk, J., Gay, C.G., Przybyszwek, C., Lillehoj, H.S. 2021. Bacillus subtilis expressing chicken NK-2 peptide protects against Eimeria acervulina challenge infection in broiler chickens. Frontiers in Veterinary Science. https://doi.org/10.3389/fvets.2021.684818.
ASFV-G-I177L is an effective oral nasal vaccine against the Eurasia Strain of Africa swine fever Reprint Icon - (Peer Reviewed Journal)
Borca, M.V., Ramirez Medina, E., Silva, E., Vuono, E., Rai, A., Pruitt, S.E., Gay, C.G., Espinoza, N.N., Velazquez-Salinas, L., Gladue, D.P. 2021. ASFV-G-I177L is an effective oral nasal vaccine against the Eurasia Strain of Africa swine fever. Viruses. https://doi.org/10.3390/v13050765.
Alternatives to antibiotics: A symposium on the challenges and solutions for animal health and production Reprint Icon - (Peer Reviewed Journal)
Callaway, T.R., Lillehoj, H.S., Chuanchuen, R., Gay, C.G. 2021. Alternatives to antibiotics: A symposium on the challenges and solutions for animal health and production. Antibiotics. https://doi.org/10.3390/antibiotics10050471.
Recombinant Bacillus subtilis carrying NK-lysin gene as an effective mucosal delivery strategy to prevent against avian coccidiosis - (Abstract Only)
Novel Foot-and-Mouth Disease vaccine platform:Formulations for safe and DIVA-compatible FMD vaccines with improved potency Reprint Icon - (Peer Reviewed Journal)
Hardham, J., Krug, P., Pacheco, J., Thompson, J., Domanowski, P., Gay, C.G., Rodriguez, L.L., Rieder, A.E. 2020. Novel Foot-and-Mouth disease vaccine platform: Formulations for safe and DIVA-compatible FMD vaccines with improved potency. Frontiers in Veterinary Science. https://doi.org/https://doi.org/10.3389/fvets.2020.554305.
Strategic priorities for research on antibiotic alternatives in animal agriculture-Results from an expert workshop Reprint Icon - (Peer Reviewed Journal)
Kurt, T., Wong, N., Fowler, N., Gay, C.G., Lillehoj, H.S., Plummer, P., Scott, M., Hoelzer, K. 2019. Strategic priorities for research on antibiotic alternatives in animal agriculture-Results from an expert workshop. Frontiers in Veterinary Science. https://doi.org/10.3389/fvets.2019.00429.
"Novel hyperimmune egg yolk IgY antibodies developed against protective antigens of Eimeria sp and Clostridium perfringens protect against coccidiosis and necrotic enteritis" - (Abstract Only)
Research and development of microbiome-related alternatives to antibiotics - (Abstract Only)
Innovative drugs, chemicals, and enzymes within the animal production chain Reprint Icon - (Peer Reviewed Journal)
Hassan, Y., Lahave, L., Gong, M., Peng, J., Gong, J., Liu, S., Gay, C.G., Yang, C. 2018. Innovative drugs, chemicals, and enzymes within the animal production chain. Veterinary Research. https://doi.org/10.1186/s13567-018-0559-1.
Phytochemicals as potential antibiotic alternatives to promote growth and enhance host health: A report from the Second International Symposium on Alternatives to Antibiotics Reprint Icon - (Peer Reviewed Journal)
Lillehoj, H.S., Liu, Y., Calsamiglia, S., Fernandez-Miyakawa, M.E., Chi, F., Cravens, R.L., Oh, S., Gay, C.G. 2018. Phytochemicals as potential antibiotic alternatives to promote growth and enhance host health: A report from the Second International Symposium on Alternatives to Antibiotics. Veterinary Research. https://doi.org/10.1186/s13567-018-0562-6.
Microbial-derived products as potential new antimicrobials: A report from the Second Alternatives to Antibiotics Symposium Reprint Icon - (Review Article)
Seal, B.S., Drider, D., Oakley, B.B., Brussow, H., Bickard, D., Rich, J.O., Miller, S., Devillard, E., Kwan, J., Bertin, G., Reeves, S., Swift, S.M., Raicek, M., Gay, C.G. 2018. Microbial-derived products as potential new antimicrobials: A report from the Second Alternatives to Antibiotics Symposium. Veterinary Research. 49:66. 10.1186/s13567-018-0563-5.
Microbial-derived products as potential new antimicrobials - (Review Article)
Seale, B., Dryder, D., Oakley, B.B., Brussow, H., Bikard, D., Rich, J.O., Miller, S., Devillard, E., Kwan, J., Bertin, G., Reeves, S., Swift, S.M., Raicek, M., Gay, C.G. 2018. Microbial-derived products as potential new antimicrobials. Veterinary Research. 49:66-78.
Vaccines as alternatives to antibiotics for food producing animals Reprint Icon - (Review Article)
Hoelzer, K., Bielke, L., Blake, D., Cox, E., Cutting, S., Devriendt, B., Erlacher-Vindel, E., Goossens, E., Karaca, K., Lemiere, S., Metzner, M., Raicek, M., Surinach, M.C., Wong, N.M., Gay, C.G., Van Immerseel, F. 2018. Vaccines as alternatives to antibiotics for food producing animals. Veterinary Research. https://doi.org/10.1186/s13567-018-0560-8.
Vaccines as alternatives to antibiotics for food producing animals. Part 1: challenges and needs - (Review Article)
Hoelzer, K., Bielke, L., Blake, D.P., Cox, E., Cutting, S.M., Devriendt, B., Erlacher-Vindel, E., Goossens, E., Karaca, K., Lemiere, S., Metzner, M., Raicek, M., Surinach, M.C., Wong, N.M., Gay, C.G., Van Immerseel, F. 2018. Vaccines as alternatives to antibiotics for food producing animals. Part 1: challenges and needs. Veterinary Research. 49:64. https://doi.org/10.1186/s13567-018-0560-8
Vaccines as alternatives to antibiotics for food producing animals. Part 2: new approaches and potential solutions Reprint Icon - (Review Article)
Hoelzer, K., Bielke, L., Blake, D.P., Cox, E., Cutting, S.M., Devriendt, B., Erlacher-Vindel, E., Gossens, E., Karaca, K., Lemiere, S., Metzner, M., Raicek, M., Surinach, M.C., Wong, N., Gay, C.G., Van Immerseel, F. 2018. Vaccines as alternatives to antibiotics for food producing animals. Part 2: new approaches and potential solutions. Veterinary Research. https://doi.org/10.1186/s13567-018-0561-7.
Global foot-and-mouth disease research update and gap analysis: 6 - immunology - (Review Article)
Robinson, L., Knight-Jones, T., Charleston, B., Rodriguez, L.L., Gay, C.G., Sumption, K., Vosloo, W. 2016. Global foot-and-mouth disease research update and gap analysis: 6 - immunology. Transboundary and Emerging Diseases. 63:56-62. doi: 10.1111.tbed.12518.
Global foot-and-mouth disease research update and gap analysis: 7 - pathogenesis and molecular biology - (Review Article)
Robinson, L., Knight-Jones, T., Charleston, B., Rodriguez, L.L., Gay, C.G., Sumption, K., Vosloo, W. 2016. Global foot-and-mouth disease research update and gap analysis: 7 - pathogenesis and molecular biology. Transboundary and Emerging Diseases. 63:63-71. doi: 10.1111.tbed.12520.
Global foot-and-mouth disease research update and gap analysis: 5 - biotherapeutics and disinfectants - (Review Article)
Robinson, L., Knight-Jones, T., Charleston, B., Rodriguez, L.L., Gay, C.G., Sumption, K., Vosloo, W. 2016. Global foot-and-mouth disease research update and gap analysis: 5 - biotherapeutics and disinfectants. Transboundary and Emerging Diseases. 63:49-55. doi: 10.1111/tbed.12519.
Viral hemorrhagic fevers of animals caused by DNA viruses - (Book / Chapter)
Borca, M.V., Gay, C.G., Risatti, G.R., O'Toole, D., Li, N., Kuhn, J.H., Lewis, C.E., Loiacono, C.M., White, D. 2016. Viral hemorrhagic fevers of animals caused by DNA viruses. Book Chapter. Borca. 2015. Global Virology I: Identifying and Invetsigating Viral Diseases. Springer Science, NY.
Global foot-and-mouth disease research update and gap analysis: 4 - diagnostics - (Review Article)
Knight-Jones, T., Robinson, L., Charleston, B., Rodriguez, L.L., Gay, C.G., Sumption, K., Vosloo, W. 2016. Global foot-and-mouth disease research update and gap analysis: 4 - diagnostics. Transboundary and Emerging Diseases. 63:42-48. doi: 10.1111/tbed.12523.
Global foot-and-mouth disease research update and gap analysis: 3 - vaccines - (Review Article)
Robinson, L., Knight-Jones, T., Charleston, B., Rodriguez, L.L., Gay, C.G., Sumption, K., Vosloo, W. 2016. Global foot-and-mouth disease research update and gap analysis: 3 - vaccines. Transboundary and Emerging Diseases. 63:30-41. doi: 10.1111/tbed.12521.
Global foot-and-mouth disease research update and gap analysis: 2 - epidemiology, wildlife and economics - (Review Article)
Knight-Jones, T., Robinson, L., Charleston, B., Rodriguez, L.L., Gay, C.G., Sumption, K., Vosloo, W. 2016. Global foot-and-mouth disease reearch update and gap analysis: 2 - epidemiology, wildlife and economics. Transboundary and Emerging Diseases. 63:14-29. doi: 10.1111/tbed.12522.
Global foot-and-mouth disease research update and gap analysis: 1 - overview of global status and research needs - (Review Article)
Knight-Jones, T., Robinson, L., Charleston, B., Rodriguez, L.L., Gay, C.G., Sumption, K., Vosloo, W. 2016. Global foot-and-mouth disease research update and gap analysis: 1 - overview of global status and research needs. Transboundary and Emerging Diseases. 63:3-13. doi: 10.1111/tbed.12528.
Genomics for the identification of novel antimicrobials - (Review Article)
Kim, W., Lillehoj, H.S., Gay, C.G. 2016. Genomics for the identification of novel antimicrobials. Scientific and Technical Review. 35(1):95-103. doi: 10.20506/rst.35.1.2420.
Orbiviruses – A North American Perspective Reprint Icon - (Peer Reviewed Journal)
McVey, D.S., Drolet, B.S., Ruder, M.G., Wilson, W.C., Nayduch, D., Pfannenstiel, R.S., Cohnstaedt, L.W., Maclachlan, J.N., Gay, C.G. 2015. Orbiviruses – A North American Perspective. Vector-Borne and Zoonotic Diseases. 15(6):335-338. https://doi.org/10.1089/vbz.2014.1699.
Viral hemorrhagic fevers of animals caused by DNA viruses - (Book / Chapter)
Borca, M.V., Gay, C.G., Risatti, G., O'Toole, G., Li, H., Kuhn, J., Lewis, C., Loiacono, C., White, D.M. 2015. Viral hemorrhagic fevers of animals caused by DNA viruses. In:Shapshak, P., Sinnott, J.T., Somboonwit, C., Kuhn, J., editors. Global Virology-Identifying and Investigating Viral Diseases. New York, NY:Springer. p. 319-343.
Alternatives to Antibiotics: Recent Scientific Development - (Abstract Only)
Alternatives to antibiotics: recent scientific development - (Abstract Only)
The gut immune system: new opportunities for targeting dietary immune modulation to enhance gut health - (Proceedings)
Alternatives to Antibiotics: Recent Scientific Development - (Proceedings)
Report from the second international symposium on animal genomics for animal health: critical needs, challenges and potential solutions - (Proceedings)
Bishop, R.C., Lunney, J.K., Pinard-Vander Laan, Gay, C.G. 2011. Report from the second international symposium on animal genomics for animal health: critical needs, challenges and potential solutions. Biomed Central (BMC) Genomics. 5(4):S1.
Rift Valley Fever Overview and Recent Developments at USDA - (Peer Reviewed Journal)
Linthicum, K., Anyamba, A., Gay, C.G., Britch, S.C., Chretien, J., Witt, C., Small, J., Tucker, C.J., Bennett, K.E., Wilson, W.C., Turell, M.J. 2009. Rift Valley Fever Overview and Recent Developments at USDA. United States Animal Health Association Proceedings. 112:256-265.
Pathobiology and diagnosis of animal transmissible spongiform encephalopathies: current knowledge, research gaps, and opportunities - (Government Publication)
Kehrli, Jr., M.E., O'Rourke, K.I., Hamir, A.N., Richt, J.A., Nicholson, E.M., Silva, C.J., Edelman, D., Gay, C.G. 2007. Pathobiology and diagnosis of animal transmissible spongiform encephalopathies: current knowledge, research gaps, and opportunities [government white paper]. Beltsville, MD: Interagency Working Group on Prion Science, Subcommittee on Pathobiology and Diagnostics. USDA, Agriculture Research Service. 33 p.
Genomics and vaccine development - (Peer Reviewed Journal)
Gay, C.G., Zuerner, R., Bannantine, J.P., Lillehoj, H.S., Zhu, J., Green, R.D., Pastoret, P.P. 2007. Genomics and vaccine development. OIE Rev. Sci Tech. 26:49-67.