African horse sickness,
Information received on 02/12/2020 from Dr Sorravis Thaneto, Director General, Livestock Development, Ministry of Agriculture and Cooperatives, BANGKOK, Thailand
Report type Follow-up report No. 35
Date of start of the event 24/02/2020
Date of confirmation of the event 27/03/2020
Report date 27/11/2020
Date submitted to OIE 02/12/2020
Reason for notification First occurrence of a listed disease in the country
Causal agent African horse sickness virus
Serotype 1
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (27/03/2020)
Follow-up report No. 1 (03/04/2020)
Follow-up report No. 2 (10/04/2020)
Follow-up report No. 3 (17/04/2020)
Follow-up report No. 4 (24/04/2020)
Follow-up report No. 5 (01/05/2020)
Follow-up report No. 6 (08/05/2020)
Follow-up report No. 7 (15/05/2020)
Follow-up report No. 8 (22/05/2020)
Follow-up report No. 9 (29/05/2020)
Follow-up report No. 10 (05/06/2020)
Follow-up report No. 11 (12/06/2020)
Follow-up report No. 12 (19/06/2020)
Follow-up report No. 13 (26/06/2020)
Follow-up report No. 14 (03/07/2020)
Follow-up report No. 15 (10/07/2020)
Follow-up report No. 16 (17/07/2020)
Follow-up report No. 17 (24/07/2020)
Follow-up report No. 18 (31/07/2020)
Follow-up report No. 19 (07/08/2020)
Follow-up report No. 20 (14/08/2020)
Follow-up report No. 21 (21/08/2020)
Follow-up report No. 22 (28/08/2020)
Follow-up report No. 23 (04/09/2020)
Follow-up report No. 24 (11/09/2020)
Follow-up report No. 25 (18/09/2020)
Follow-up report No. 26 (25/09/2020)
Follow-up report No. 27 (02/10/2020)
Follow-up report No. 28 (14/10/2020)
Follow-up report No. 29 (16/10/2020)
Follow-up report No. 30 (26/10/2020)
Follow-up report No. 31 (30/10/2020)
Follow-up report No. 32 (06/11/2020)
Follow-up report No. 33 (14/11/2020)
Follow-up report No. 34 (23/11/2020)
Follow-up report No. 35 (27/11/2020)
Follow-up report No. 36 (04/12/2020)
Follow-up report No. 37 (15/12/2020)
Follow-up report No. 38 (21/12/2020)
Follow-up report No. 39 (04/01/2021)
Follow-up report No. 40 (07/01/2021)
Follow-up report No. 41 (13/01/2021)
Outbreaks There are no new outbreaks in this report
Source of the outbreak(s) or origin of infection
  • Imported Equides during 2019-2020 could be suspected as a potential source of this outbreak.
Epidemiological comments The Department of Livestock Development (DLD) updated the latest situation of the African Horse Sickness (AHS) outbreak in Thailand in English language on “Thailand Today”, a national television broadcast program (NBT World channel), on 2 June 2020 at 9 P.M. Eighteen samples (equine blood and serum) were sent to Laboratorio Central de Veterinaria, Madrid (Spain) for checking serotype on the 14th May 2020 and the results were positive for African Horse Sickness (AHS) disease and all eighteen samples were diagnosed as serotype 1 of AHS virus. Those samples were sent by the Department of Livestock Development (DLD, competent authority of veterinary service in Thailand). Regarding the public private partnership (PPP), three common goals could be achieved through its creation: eradication o this disease in Thailand, control measures on zebra and recovery of AHS free status from the OIE. The strong collaboration from universities, government sectors, and private sectors are essential for setting up the national eradication plan under the order of National Committee for AHS Management which is approved by Ministry of Agriculture and Cooperatives. In addition, to manage clearly AHS risk factors, the Department of Livestock Development has also assigned subcommittees including Technical Subcommittee, AHS control in Zebra Subcommittee, and Vector Control and Research Subcommittee. 14 July 2020 Signing Ceremony of Memorandum of Understanding (MOU) - African Horse Sickness Eradication / Public Private Partnership (PPP) The Department of Livestock Development and network partners, a total of 17 agencies jointly signed a Memorandum of Understanding (MoU) to eradication African Horse Sickness in Thailand. Network agencies consists of the Department of National Parks, Wildlife and Plant Conservation, Department of Local Administration, The Zoological Park Organization of Thailand, Public Relations Department, Department of Animal Husbandry, His Royal Highness's Horse 29th Cavalry Battalion, Queen's Guard, The Thai Red Cross Society, Equestrian Sports Association of Thailand, Thai Horse Racing Association, Polo Equestrian Association of Thailand. There are 15 provinces where the outbreaks of AHS are resolved: Chaiyaphum, Sa Kaeo, Ratchaburi. Chonburi, Prachuap Khiri Khan, Lop Buri, Nakhon Nayok, Nakhon Ratchasima, Phetchaburi, Phra Nakhon Si Ayutthaya, Saraburi, Chachoengsao, Nonthaburi, Pathum Thani and Krung Thep Maha Nakhon (Bangkok). During outbreak investigations, samples were collected and submitted to National Institute of Animal Health (NIAH), Department of Livestock Development (DLD). Laboratory results show that samples were positive with AHS serotype 1. Sequencing results revealed that samples were closely related to virus field strains originating from the Republic of South Africa and Namibia. These results are similar to a publication of OIE-AHS reference laboratory, the Pirbright Institute (attached). Results from laboratories are corresponding to our records of imported animals during 2019 to 2020. The records show that there were zebras imported from South Africa in July 2019, January 2020, and March 2020.
Control measures
Measures applied
  • Movement control inside the country
  • Vaccination in response to the outbreak (s)
    Administrative division Species Total Vaccinated Details
    Prachin Buri Equidae 141
    Prachuap Khiri Khan Equidae 408
    Ratchaburi Equidae 854
    Rayong Equidae 294
    Sa Kaeo Equidae 101
    Samut Prakan Equidae 246
    Samut Sakhon Equidae 16
    Samut Songkhram Equidae 29
    Saraburi Equidae 598
    Sing Buri Equidae 45
    Suphan Buri Equidae 242
    Phra Nakhon Si Ayutthaya Equidae 209
    Phetchaburi Equidae 1099
    Pathum Thani Equidae 250
    Nonthaburi Equidae 156
    Nakhon Sawan Equidae 90
    Nakhon Ratchasima Equidae 1660
    Nakhon Pathom Equidae 352
    Nakhon Nayok Equidae 248
    Lop Buri Equidae 231
    Krung Thep Maha Nakhon (Bangkok) Equidae 732
    Kanchanaburi Equidae 595
    Chon Buri Equidae 1034
    Chanthaburi Equidae 186
    Chachoengsao Equidae 264
    Buri Ram Equidae 119
    Ang Thong Equidae 87
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Quarantine
  • Zoning
  • Disinfection
  • Control of vectors
  • Vector surveillance
  • No treatment of affected animals
Measures to be applied
  • No other measures
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.