African Horse Sickness Virus: History, Transmission, and Current Status.
Abstract: African horse sickness virus (AHSV) is a lethal arbovirus of equids that is transmitted between hosts primarily by biting midges of the genus Culicoides (Diptera: Ceratopogonidae). AHSV affects draft, thoroughbred, and companion horses and donkeys in Africa, Asia, and Europe. In this review, we examine the impact of AHSV critically and discuss entomological studies that have been conducted to improve understanding of its epidemiology and control. The transmission of AHSV remains a major research focus and we critically review studies that have implicated both Culicoides and other blood-feeding arthropods in this process. We explore AHSV both as an epidemic pathogen and within its endemic range as a barrier to development, an area of interest that has been underrepresented in studies of the virus to date. By discussing AHSV transmission in the African republics of South Africa and Senegal, we provide a more balanced view of the virus as a threat to equids in a diverse range of settings, thus leading to a discussion of key areas in which our knowledge of transmission could be improved. The use of entomological data to detect, predict and control AHSV is also examined, including reference to existing studies carried out during unprecedented outbreaks of bluetongue virus in Europe, an arbovirus of wild and domestic ruminants also transmitted by Culicoides.
Publication Date: 2017-02-01 PubMed ID: 28141961DOI: 10.1146/annurev-ento-031616-035010Google Scholar: Lookup
The Equine Research Bank provides access to a large database of publicly available scientific literature. Inclusion in the Research Bank does not imply endorsement of study methods or findings by Mad Barn.
- Historical Article
- Journal Article
- Review
- Research Support
- Non-U.S. Gov't
- African Horse Sickness
- Arboviruses
- Culicoides
- Disease control
- Disease Outbreaks
- Disease Surveillance
- Disease Transmission
- Disease Treatment
- Epidemiology
- Equine Diseases
- Equine Health
- Equine Studies
- Horses
- Infectious Disease
- Public Health
- Vector-borne disease
- Veterinary Medicine
- Veterinary Research
- Veterinary Science
- Virus
Summary
This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.
This research article reviews the African horse sickness virus (AHSV), a deadly virus that impacts horses and donkeys. By examining the history, transmission, and current state of the disease, the researchers aim to improve understanding of its epidemiology and control.
Understanding African Horse Sickness Virus
- AHSV is an arbovirus lethal to equids, animals such as horses and donkeys. The virus spreads primarily through biting midges belonging to the Culicoides genus.
- The virus impacts draft, thoroughbred, and companion horses and donkeys in regions spanning from Africa and Asia to Europe.
- The article critically examines the impact of AHSV and discusses studies that aim to enhance understanding of its epidemiology, transmission, and control.
AHSV Transmission: The Main Focus of Research
- Most research conducted focuses on the transmission of AHSV.
- Many studies have indicated both Culicoides and other blood-feeding arthropods as key contributors to the transmission process.
- The article critically reviews these studies to contribute to the understanding and control of the disease.
AHSV: An Epidemic Pathogen and Barrier to Development
- The virus is not only studied as an epidemic pathogen but also in its role as a barrier to development within its endemic range.
- This aspect of the virus has been underrepresented in many studies.
- The article discusses AHSV transmission in South Africa and Senegal in particular to provide more diversity in understanding the threat of the virus.
Detecting, Predicting, and Controlling AHSV Using Entomological Data
- The researchers discuss the practical use of entomological data in detecting, predicting, and controlling AHSV.
- This includes reviewing existing studies on unprecedented outbreaks of bluetongue virus (another arbovirus transmitted by Culicoides) in Europe as a possible reference for predicting and controlling AHSV.
Cite This Article
APA
Carpenter S, Mellor PS, Fall AG, Garros C, Venter GJ.
(2017).
African Horse Sickness Virus: History, Transmission, and Current Status.
Annu Rev Entomol, 62, 343-358.
https://doi.org/10.1146/annurev-ento-031616-035010 Publication
Researcher Affiliations
- Vector-borne Viral Diseases Program, Pirbright Institute, Woking, Surrey GU24 0NF, United Kingdom; email: simon.carpenter@pirbright.ac.uk.
- Vector-borne Viral Diseases Program, Pirbright Institute, Woking, Surrey GU24 0NF, United Kingdom; email: simon.carpenter@pirbright.ac.uk.
- ISRA-LNERV, BP 3120 Dakar, Senegal.
- Cirad UMR15 CMAEE, 34398 Montpellier, Cedex 5, France.
- Parasites, Vectors, and Vector-Borne Diseases, Agricultural Research Council-Onderstepoort Veterinary Institute, Onderstepoort 0110, South Africa.
- Department of Veterinary Tropical Diseases, University of Pretoria, Pretoria 0001, South Africa.
MeSH Terms
- Africa
- African Horse Sickness / history
- African Horse Sickness / transmission
- African Horse Sickness / virology
- African Horse Sickness Virus
- Animals
- Asia
- Ceratopogonidae / virology
- Equidae
- Europe
- History, 15th Century
- History, 16th Century
- History, 17th Century
- History, 18th Century
- History, 19th Century
- History, 20th Century
- History, 21st Century
- History, Medieval
- Horse Diseases / history
- Horse Diseases / transmission
- Horse Diseases / virology
- Horses
- Senegal
- South Africa
Grant Funding
- BBS/E/I/00001701 / Biotechnology and Biological Sciences Research Council
Citations
This article has been cited 58 times.- Penzhorn L, Crafford JE, Guthrie AJ. Enhancing African horse sickness virus detection: comparing and adapting PCR assays. J Vet Diagn Invest 2026 Feb 7;:10406387261417355.
- Ye RZ, Li YY, Wang XY, Cao WC. Tick-borne viruses: discovery, clinical aspects, influencing factors and control. Nat Rev Microbiol 2026 Jan 19;.
- Ma X, Zhang M, Zhang X, Qi T, Zhang W, Zhao Y, Na L, Zhang Y, Wang XF, Wang X. Construction and Immunogenicity Evaluation of a Recombinant Fowlpox Virus Expressing VP2 Gene of African Horse Sickness Virus Serotype 1. Microorganisms 2025 Dec 9;13(12).
- Li H, Gao J, Xiong H, Yishake D, Liu L, Kong J, Chen Q, Fang X, Weng W. Electrostatically Adjustable AuNR-Mediated Thermal-Start Isothermal Nucleic Acid Amplification. ACS Omega 2025 Sep 16;10(36):41524-41531.
- Tinarwo M, Dennis SJ, Hitzeroth II, Meyers AE, Rybicki EP, Mbewana S. Development of an African horse sickness VP6 DIVA diagnostic ELISA. Virol J 2025 Aug 12;22(1):276.
- Ireland HM, Ruxton GD. Zebra stripes: the questions raised by the answers. Biol Rev Camb Philos Soc 2025 Dec;100(6):2660-2680.
- Blitvich BJ. The Role of Hematophagous Arthropods, Other than Mosquitoes and Ticks, in Arbovirus Transmission. Viruses 2025 Jun 30;17(7).
- Walczak M, Frant M, Szymankiewicz K, Juszkiewicz M, Podgórska K, Smreczak M. Is African Swine Fever Driven by Flying Hematophagous Insects?. Pathogens 2025 Jun 5;14(6).
- Suvanto MT, Truong Nguyen PT, Vauhkonen H, Olander V, Joensuu R, Culverwell CL, Kaansalo K, Hepojoki J, Vapalahti O, Korhonen EM, Smura T, Huhtamo E. Isolation and genetic characterization of a novel Kevo orbivirus and a strain of Mobuck virus from Ochlerotatus communis mosquitoes in Finland. J Gen Virol 2025 Jun;106(6).
- Punyadarsaniya D, Taesuji M, Rattanamas K, Ruenphet S. Establishment of an In-House Indirect Enzyme-Linked Immunosorbent Assay to Detect Antibodies Against African Horse Sickness Based on Monovalent and Polyvalent Live Attenuated Vaccines During the First Outbreak in Thailand. Animals (Basel) 2025 May 15;15(10).
- Kim K, Xu T, Kannan Villalan A, Chi T, Yu X, Jin M, Wu R, Ni G, Sui S, Wang Z, Wang X. Environmental and Historical Determinants of African Horse Sickness: Insights from Predictive Modeling. Transbound Emerg Dis 2024;2024:5586647.
- Huang C, Wang J, Ruan Z, Wu J, Lin Y, Cao C, Yang J, Weng Q, Jin Y, Chen P, Hua Q. Real-Time Reverse Transcription Multienzyme Isothermal Rapid Amplification for Rapid Detection of African Horse Sickness Virus. Transbound Emerg Dis 2025;2025:1852368.
- Ergunay K, Bourke BP, Linton YM. Exploring the potential of tick transcriptomes for virus screening: A data reuse approach for tick-borne virus surveillance. PLoS Negl Trop Dis 2025 Mar;19(3):e0012907.
- Prudhomme J, Bardet C, Rakotoarivony I, Garros C, Bouhsira É, Lienard E. Local investigation into the role of Culicoides species diversity (Diptera: Ceratopogonidae) in recurrent horse dermatitis cases in southwest France. Parasit Vectors 2025 Mar 5;18(1):86.
- Al-Malki ES. The impacts of climate change on the global range of Culicoides punctatus (Meigen, 1804) with notes on its status in Saudi Arabia. PeerJ 2025;13:e18916.
- Ma X, Zhang Y, Na L, Qi T, Ma W, Guo X, Wang XF, Wang X. Identification and Characterization of Linear Epitopes of Monoclonal Antibodies Against African Horse Sickness Virus Serotype 1 VP2 Protein. Viruses 2024 Nov 15;16(11).
- de Klerk J, Tildesley M, Labuschagne K, Gorsich E. Modelling bluetongue and African horse sickness vector (Culicoides spp.) distribution in the Western Cape in South Africa using random forest machine learning. Parasit Vectors 2024 Aug 21;17(1):354.
- Laredo-Tiscareño SV, Garza-Hernandez JA, Tangudu CS, Dankaona W, Rodríguez-Alarcón CA, Adame-Gallegos JR, De Luna Santillana EJ, Huerta H, Gonzalez-Peña R, Rivera-Martínez A, Rubio-Tabares E, Beristain-Ruiz DM, Blitvich BJ. Discovery of Novel Viruses in Culicoides Biting Midges in Chihuahua, Mexico. Viruses 2024 Jul 19;16(7).
- Pitchers KG, Boakye OD, Campeotto I, Daly JM. The Potential of Plant-Produced Virus-like Particle Vaccines for African Horse Sickness and Other Equine Orbiviruses. Pathogens 2024 May 28;13(6).
- Ashby M, Moore R, King S, Newbrook K, Flannery J, Batten C. Designing a Multiplex PCR-xMAP Assay for the Detection and Differentiation of African Horse Sickness Virus, Serotypes 1-9. Microorganisms 2024 May 3;12(5).
- Utrilla-Trigo S, Jiménez-Cabello L, Marín-López A, Illescas-Amo M, Andrés G, Calvo-Pinilla E, Lorenzo G, van Rijn PA, Ortego J, Nogales A. Engineering recombinant replication-competent bluetongue viruses expressing reporter genes for in vitro and non-invasive in vivo studies. Microbiol Spectr 2024 Mar 5;12(3):e0249323.
- Li N, Meng J, He Y, Wang W, Wang J. Potential roles of Culicoides spp. (Culicoides imicola, Culicoides oxystoma) as biological vectors of bluetongue virus in Yuanyang of Yunnan, P. R. China. Front Cell Infect Microbiol 2023;13:1283216.
- Kampen H, Werner D. Biting Midges (Diptera: Ceratopogonidae) as Vectors of Viruses. Microorganisms 2023 Nov 4;11(11).
- El Ghassem A, Abdoullah B, Deida J, Ould Lemrabott MA, Ouldabdallahi Moukah M, Ould Ahmedou Salem MS, Briolant S, Basco LK, Ould Brahim K, Ould Mohamed Salem Boukhary A. Arthropod-Borne Viruses in Mauritania: A Literature Review. Pathogens 2023 Nov 20;12(11).
- Kunanusont N, Taesuji M, Kulthonggate U, Rattanamas K, Mamom T, Thongsri K, Phannithi T, Ruenphet S. Longitudinal humoral immune response and maternal immunity in horses after a single live-attenuated vaccination against African horse sickness during the disease outbreak in Thailand. Vet World 2023 Aug;16(8):1690-1694.
- Petrone-García VM, Castellanos-Huerta I, Tellez-Isaias G. Editorial: High-impact respiratory RNA virus diseases. Front Vet Sci 2023;10:1273650.
- Frisch V, Fuehrer HP, Cavalleri JV. Relevant Brachycera (Excluding Oestroidea) for Horses in Veterinary Medicine: A Systematic Review. Pathogens 2023 Apr 6;12(4).
- Taesuji M, Rattanamas K, Kulthonggate U, Mamom T, Ruenphet S. Sensitivity and specificity for African horse sickness antibodies detection using monovalent and polyvalent vaccine antigen-based dot blotting. Vet World 2022 Dec;15(12):2760-2763.
- Bekker S, Potgieter CA, van Staden V, Theron J. Investigating the Role of African Horse Sickness Virus VP7 Protein Crystalline Particles on Virus Replication and Release. Viruses 2022 Oct 4;14(10).
- Durán-Ferrer M, Villalba R, Fernández-Pacheco P, Tena-Tomás C, Jiménez-Clavero MÁ, Bouzada JA, Ruano MJ, Fernández-Pinero J, Arias M, Castillo-Olivares J, Agüero M. Clinical, Virological and Immunological Responses after Experimental Infection with African Horse Sickness Virus Serotype 9 in Immunologically Naïve and Vaccinated Horses. Viruses 2022 Jul 15;14(7).
- Jiménez-Cabello L, Utrilla-Trigo S, Barreiro-Piñeiro N, Pose-Boirazian T, Martínez-Costas J, Marín-López A, Ortego J. Nanoparticle- and Microparticle-Based Vaccines against Orbiviruses of Veterinary Importance. Vaccines (Basel) 2022 Jul 14;10(7).
- Stokes JE, Carpenter S, Sanders C, Gubbins S. Emergence dynamics of adult Culicoides biting midges at two farms in south-east England. Parasit Vectors 2022 Jul 11;15(1):251.
- Nelson E, Thurston W, Pearce-Kelly P, Jenkins H, Cameron M, Carpenter S, Guthrie A, England M. A Qualitative Risk Assessment for Bluetongue Disease and African Horse Sickness: The Risk of Entry and Exposure at a UK Zoo. Viruses 2022 Feb 28;14(3).
- Gao S, Zeng Z, Wang H, Chen F, Huang L, Wang X. Predicting the possibility of African horse sickness (AHS) introduction into China using spatial risk analysis and habitat connectivity of Culicoides. Sci Rep 2022 Mar 10;12(1):3910.
- Assefa A, Tibebu A, Bihon A, Dagnachew A, Muktar Y. Ecological niche modeling predicting the potential distribution of African horse sickness virus from 2020 to 2060. Sci Rep 2022 Feb 2;12(1):1748.
- Fairbanks EL, Brennan ML, Mertens PPC, Tildesley MJ, Daly JM. Re-parameterization of a mathematical model of African horse sickness virus using data from a systematic literature search. Transbound Emerg Dis 2022 Jul;69(4):e671-e681.
- Yoon J, Park T, Kim A, Song H, Park BJ, Ahn HS, Go HJ, Kim DH, Lee JB, Park SY, Song CS, Lee SW, Choi IS. First Detection and Genetic Characterization of New Equine Parvovirus Species Circulating among Horses in Korea. Vet Sci 2021 Nov 7;8(11).
- Gao H, Wang L, Ma J, Gao X, Xiao J, Wang H. Modeling the current distribution suitability and future dynamics of Culicoides imicola under climate change scenarios. PeerJ 2021;9:e12308.
- Nouda R, Minami S, Kanai Y, Kawagishi T, Nurdin JA, Yamasaki M, Kuwata R, Shimoda H, Maeda K, Kobayashi T. Development of an entirely plasmid-based reverse genetics system for 12-segmented double-stranded RNA viruses. Proc Natl Acad Sci U S A 2021 Oct 19;118(42).
- Clemmons EA, Alfson KJ, Dutton JW 3rd. Transboundary Animal Diseases, an Overview of 17 Diseases with Potential for Global Spread and Serious Consequences. Animals (Basel) 2021 Jul 8;11(7).
- Aguilar-Vega C, Rivera B, Lucientes J, Gutiérrez-Boada I, Sánchez-Vizcaíno JM. A study of the composition of the Obsoletus complex and genetic diversity of Culicoides obsoletus populations in Spain. Parasit Vectors 2021 Jul 3;14(1):351.
- Snyman J, Koekemoer O, van Schalkwyk A, Jansen van Vuren P, Snyman L, Williams J, Venter M. Epidemiology and Genomic Analysis of Equine Encephalosis Virus Detected in Horses with Clinical Signs in South Africa, 2010-2017. Viruses 2021 Mar 2;13(3).
- Tugwell LA, England ME, Gubbins S, Sanders CJ, Stokes JE, Stoner J, Graham SP, Blackwell A, Darpel KE, Carpenter S. Thermal limits for flight activity of field-collected Culicoides in the United Kingdom defined under laboratory conditions. Parasit Vectors 2021 Jan 18;14(1):55.
- Alonso C, Utrilla-Trigo S, Calvo-Pinilla E, Jiménez-Cabello L, Ortego J, Nogales A. Inhibition of Orbivirus Replication by Aurintricarboxylic Acid. Int J Mol Sci 2020 Oct 2;21(19).
- Hristescu D, Bărbuceanu F, Dascălu L, Nițescu C, Goffredo M, Santilli A, Quaglia M, Balenghien T, Predoi G. Species composition and relative abundance of the genus Culicoides (Diptera: Ceratopogonidae) in Romania. Parasit Vectors 2020 Aug 3;13(1):393.
- Calvo-Pinilla E, Marín-López A, Utrilla-Trigo S, Jiménez-Cabello L, Ortego J. Reverse genetics approaches: a novel strategy for African horse sickness virus vaccine design. Curr Opin Virol 2020 Oct;44:49-56.
- Molini U, Zaccaria G, Kandiwa E, Mushonga B, Khaiseb S, Ntahonshikira C, Chiwome B, Baines I, Madzingira O, Savini G, D'Alterio N. Seroprevalence of African horse sickness in selected donkey populations in Namibia. Vet World 2020 May;13(5):1005-1009.
- Bell-Sakyi L, Mohd Jaafar F, Monsion B, Luu L, Denison E, Carpenter S, Attoui H, Mertens PPC. Continuous Cell Lines from the European Biting Midge Culicoides nubeculosus (Meigen, 1830). Microorganisms 2020 May 30;8(6).
- England ME, Pearce-Kelly P, Brugman VA, King S, Gubbins S, Sach F, Sanders CJ, Masters NJ, Denison E, Carpenter S. Culicoides species composition and molecular identification of host blood meals at two zoos in the UK. Parasit Vectors 2020 Mar 16;13(1):139.
- Bianchini J, Humblet MF, Cargnel M, Van der Stede Y, Koenen F, de Clercq K, Saegerman C. Prioritization of livestock transboundary diseases in Belgium using a multicriteria decision analysis tool based on drivers of emergence. Transbound Emerg Dis 2020 Jan;67(1):344-376.
- Dennis SJ, Meyers AE, Hitzeroth II, Rybicki EP. African Horse Sickness: A Review of Current Understanding and Vaccine Development. Viruses 2019 Sep 11;11(9).
- Barba M, Fairbanks EL, Daly JM. Equine viral encephalitis: prevalence, impact, and management strategies. Vet Med (Auckl) 2019;10:99-110.
- Garros C, Labuschagne K, Dommergues L, Ben M, Balenghien T, Muñoz F, Bakhoum MT, Cardinale E, Guis H. Culicoides Latreille in the sun: faunistic inventory of Culicoides species (Diptera: Ceratopogonidae) in Mayotte (Comoros Archipelago, Indian Ocean). Parasit Vectors 2019 Mar 22;12(1):135.
- Bakhoum MT, Sarr M, Fall AG, Huber K, Fall M, Sembène M, Seck MT, Labuschagne K, Gardès L, Ciss M, Gimonneau G, Bouyer J, Baldet T, Garros C. DNA barcoding and molecular identification of field-collected Culicoides larvae in the Niayes area of Senegal. Parasit Vectors 2018 Dec 3;11(1):615.
- Morales-Hojas R, Hinsley M, Armean IM, Silk R, Harrup LE, Gonzalez-Uriarte A, Veronesi E, Campbell L, Nayduch D, Saski C, Tabachnick WJ, Kersey P, Carpenter S, Fife M. The genome of the biting midge Culicoides sonorensis and gene expression analyses of vector competence for bluetongue virus. BMC Genomics 2018 Aug 22;19(1):624.
- Hope A, Gubbins S, Sanders C, Barber J, Stubbins F, Baylis M, Carpenter S. Sheep breed and shearing influences attraction and blood-feeding behaviour of Culicoides (Diptera: Ceratopogonidae) on a UK farm. Parasit Vectors 2018 Aug 20;11(1):473.
- Diarra M, Fall M, Fall AG, Diop A, Lancelot R, Seck MT, Rakotoarivony I, Allène X, Bouyer J, Guis H. Spatial distribution modelling of Culicoides (Diptera: Ceratopogonidae) biting midges, potential vectors of African horse sickness and bluetongue viruses in Senegal. Parasit Vectors 2018 Jun 8;11(1):341.
- Oluwayelu D, Adebiyi A, Tomori O. Endemic and emerging arboviral diseases of livestock in Nigeria: a review. Parasit Vectors 2018 Jun 7;11(1):337.
Use Nutrition Calculator
Check if your horse's diet meets their nutrition requirements with our easy-to-use tool Check your horse's diet with our easy-to-use tool
Talk to a Nutritionist
Discuss your horse's feeding plan with our experts over a free phone consultation Discuss your horse's diet over a phone consultation
Submit Diet Evaluation
Get a customized feeding plan for your horse formulated by our equine nutritionists Get a custom feeding plan formulated by our nutritionists