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Horse flu (or '''Equine influenza''') refers to varieties of Influenzavirus A that are Endemic in Horse s. Horse flu viruses were only isolated in 1956 . There are two main types of virus called equine-1 ( H7N7 ) which commonly affects horse heart muscle and equine-2 ( H3N8 ) which is usually more severe. Horse flu is endemic throughout the world. The disease has a nearly 100% infection rate in an unvaccinated horse population that has not been previously exposed to the virus. The incubation time is one to five days. Horses with horse flu can run a fever, have a dry hacking cough, have a runny nose, and become depressed and reluctant to eat or drink for several days but usually recover in 2 to 3 weeks. "Vaccination schedules generally require a primary course of 2 doses, 3-6 weeks apart, followed by boosters at 6-12 month intervals. It is generally recognised that in many cases such schedules may not maintain protective levels of antibody and more frequent administration is advised in high-risk situations." equiflunet_vaccines SEE ALSO SOURCES FURTHER READING |
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