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A vaccine is available for horses. [1] This vaccine is an inactivated vaccine that uses the TC-83 strain of EEEV. [13] It is usually given in combination with vaccines for Western equine encephalitis (WEE), Venezuelan equine encephalitis (VEE), and tetanus, [4] and is also used by
This lack of a cure or vaccine is a definite problem in the equine industry, especially in developing countries where equines are highly valuable for both agriculture and transportation. [5] Dourine is considered an endemic problem in developing countries, where over sixty percent of equines in the world are located. [ 4 ]
Unlike Eastern equine encephalitis, the overall mortality of WEE is low (approximately 4%) and is associated mostly with infection in the elderly. Approximately 15–20% of horses that acquire the virus will die or be put down. [3] There is no human vaccine for WEE and there are no licensed therapeutic drugs in the U.S. for this infection.
There is an inactivated vaccine containing the C-84 strain for VEE virus that is used to immunize horses. Another vaccine, containing the TC-83 strain, is used on humans in military and laboratory positions who risk contracting the virus. The human vaccine can result in side effects and does not fully immunize the patient.
Vaccine for horses. In November 2012, a vaccine became available for horses. The vaccine is to be used in horses only, since, according to CSIRO veterinary pathologist Deborah Middleton, breaking the transmission cycle from flying foxes to horses prevents it from passing to humans, as well as, "a vaccine for people would take many more years."
Equine viral arteritis (EVA) is a disease of horses caused by a virus of the species Alphaarterivirus equid, an RNA virus. [1] [2] It is the only species in the genus Alphaarterivirus, and that is the only genus in the Equarterivirinae subfamily. The virus which causes EVA was first isolated in 1953, but the disease has afflicted equine animals ...
Equine influenza is characterized by a very high rate of transmission among horses, and has a relatively short incubation time of one to three days. [6] Clinical signs of equine influenza include fever (up to 106 °F [41 °C]), nasal discharge, have a dry, hacking cough, depression, loss of appetite and weakness. [6]
There are two forms, both linked to the same genetic variant. Affected horses may exhibit one or both forms. The first is Immune-Mediated Myositis (IMM). It may occur in response to a vaccine or infectious agent, where the immune system misinterprets the muscle cells as foreign and rapidly attacks them.