African Horse Sickness

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Related to African Horse Sickness: equine infectious anemia, African swine fever, Rabbit hemorrhagic disease, Venezuelan equine encephalitis

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 ?
The discovery of a co-infection with Middelburg virus in 1 of the horses implies that broad screening for arbovirus infections in unexplained illnesses is warranted, and consideration should be given to inclusion of generic RTPCRs for alphaviruses, flaviviruses, othobunyaviruses, and vesiculoviruses, in addition to African horse sickness and equine encephalosis viruses in future studies.
Vaccination against bluetongue disease, EHD, and African horse sickness in Algeria is forbidden by law because vaccinated animals cannot be differentiated from naturally infected animals.
Camels are susceptible to infection by Rift Valley fever virus (RVFV), West Nile virus (WNV), and African horse sickness virus (AHSV), although their epidemiologic role in these diseases is uncertain (l-3).
DEFRA add: "If we do not have accurate information on the overall size of the UK horse population and it's geographic distribution, we cannot plan effective monitoring of equine diseases, or develop effective control strategies in the event of an outbreak of a notifiable or exotic horse diseases, such as African Horse Sickness or West Nile Fever.
ONE of the big challenges the Cape sale faces is the current quarantine issues raised by outbreaks of African Horse Sickness.
Furthermore, the similarity of EEV to African horse sickness virus, one of the most devastating pathogens of equids, warranted further investigation of the outbreaks and molecular characterization of the virus.
Pirbright deals with exotic diseases of farm animals like foot-and-mouth and African horse sickness or bluetongue - a disease of sheep now spreading into northern Europe because of climate change.
Trainer Mike de Kock, landing his third J&B Met win, had considered scratching Igugu from the race after so much went wrong in her preparation, when she had a respiratory infection and then went into quarantine due to the African horse sickness outbreak.
Horses are economically important in South Africa, and diagnoses for animals with severe or fatal disease are frequently requested because of the presence of African horse sickness virus in the country, which is a notifiable disease (www.
For this reason camels are highly resistant to many deadly viral diseases, including foot-and-mouth, Rift Valley fever, rinderpest and African horse sickness.

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