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.
Investigations on outbreaks of African horse sickness in the surveillance zone in South Africa.
Possible spread of African horse sickness on the wind.
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.
A similar finding has been observed in African horse sickness virus Seg-10, which also forms into 3 distinct groups (13).
The 1996 outbreak of African horse sickness in South Africa--the entomological perspective.
Finally, the family Reoviridae contains a variety of animal arbovirus pathogens, including bluetongue virus and African horse sickness virus, both known to be circulating in Europe.
These diseases include avian influenza, Newcastle disease, Rift Valley fever, foot and mouth disease, swine vesicular disease, vesicular stomatitis, classical swine fever, African horse sickness, African swine fever, bluetongue, contagious bovine pleuropneumonia, lumpy skin disease, peste des petits ruminants, rinderpest, and sheep and goat pox.
PLANS to bring top South African filly Sun Classique to Britain to be trained by Ed Dunlop have had to be postponed because of concerns over the deadly African Horse Sickness.
Since the squad has been quartered in Dubai for the winter, they are not affected by concerns over the deadly African horse sickness that were raised by the Horse Trust this week.
THE European Commission has lifted a ban on the direct export of horses from South Africa, introduced in early 2004 after an outbreak of African horse sickness (AHS), for which there is no widely available treatment, in Stellen-bosch in the Western Cape.
We've been a bit quiet for the past fortnight, we've just vaccinated the horses against African Horse Sickness.

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