African Horse Sickness

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African horse sickness

[′af·ri·kən hȯrs ′sik·nəs]
(veterinary medicine)
An infectious, mosquito-borne virus disease of equines characterized by fever and edematous swelling.

African Horse Sickness


a chronic infectious disease of horses, mules, and asses, characterized by the formation of abscesses along the passage of the lymph vessels.

African horse sickness is distributed in India, Burma, the Sudan, Sweden, and some other countries. In the USSR it was eliminated in 1960. The mortality rate is 10 to 20 percent. The causative agent is a fungus, Cryptococcus farciminosus. The source of the infectious agent is diseased animals. Factors in the transmission of the causative agent are infected objects of care and fodder. Infection occurs through injured skin, the respiratory tract, and the digestive tract. Insects may also transmit the disease. Unsatisfactory conditions of care and feeding promote the spread and prolong the course of the disease. The fungus is localized in the skin, subcutaneous tissue, and lymph vessels. Wherever it is embedded, nodes are formed. The nodes are followed by abscesses, which open to reveal ulcers. Multiple infections may be complicated by pyogenic infection and death of the animal.

African horse sickness may be treated by removing nodes, ulcers, and affected lymph nodes and vessels and administering acriflavine, distilled preparation of Ranunculus, and preparation ASD (anticeptum dorochovi). Preventive measures include the observance of sanitary conditions in managing, feeding, and caring for animals. When cases of the disease appear, the farm is quarantined.

References in periodicals archive ?
In vivo cross-protection to African horse sickness serotypes 5 and 9 after vaccination with serotypes 8 and 6.
Minister of Economic Opportunities, Alan Winde said: Responsible vaccination against African Horse Sickness decreases the risks of outbreaks in the province and increases the likelihood that trade partners interested in South African horses will keep the trade pathways for horses from South Africa open.
Investigations on outbreaks of African horse sickness in the surveillance zone in South Africa.
This study was supported by the MedReoNet Surveillance Network of Reoviruses, Bluetongue and African Horse Sickness, in the Mediterranean basin and Europe, Sixth Framework Programme.
positive for antibody characteristic samples RVFV WNV AHSV RVFV and WNV Origin Tata 2 0 0 0 0 Smara-Laayoune 58 13 20 0 11 Dakhla 40 2 9 0 1 Age group, y <1 18 1 1 0 1 1-2 25 0 1 0 0 3-5 7 1 3 0 1 6-10 27 6 12 0 10 >10 23 7 12 0 0 Sex M 71 10 15 0 7 F 29 5 14 0 5 Total 100 15 29 0 12 * RVFV, Rift Valley fever virus; WNV, West Nile virus; AHSV, African horse sickness virus.
The phylogenetic analyses of EEV Seg-10 grouped the Israeli isolates with other EEV isolates but as a distinct group with no close relation to African horse sickness virus, BTV, or epizootic hemorrhagic disease virus.
African horse sickness virus (AHSV), equine encephalosis virus (EEV), and equine herpesviruses (EHV) 1 and 4 were identified by using viral culture and antigen detection assays and/or complement fixation tests (31) on serum samples and using RT-PCR to detect AHSV and EHV (32).
Scheduled to take place on Monday, June 23, at Tattersalls' Park Paddocks in Newmarket, the meeting brings together an international line-up of speakers who will warn of the dangers of two exotic diseases in particular, African horse sickness and west Nile virus.
The specificity of the RT-qPCR used had been previously tested against prototype strains of genetically related viruses (9 strains of epizootic hemorrhagic disease virus and 9 strains of African horse sickness virus) (5).
Bluetongue is closely related to the virus African Horse Sickness, which is spread by the same species of midge.
The first paragraph of the article incorrectly states that African horse sickness virus is circulating in Europe.
With the advent of African horse sickness, bluetongue, equine influenza etc, and the ever-increasing demand for the reduction in carbon emissions, how long is it going to be before the government imposes measures to combat what it would see as an equivalent of equine foot and mouth?

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