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Vaccinations Vaccines are preparations of killed microorganisms or living weakened microorganisms introduced into the body to produce immunity to a specific disease by causing the formation of antibodies. Vaccines are very delicate compounds, which if handled or administered incorrectly will be ineffective or neutralized. Vaccines are administered initially as a two-shot series and then annually or semiannually. The vaccines and vaccine protocols listed below are tailored to our practice and geographic location and follow the guidelines of the AAEP. Eastern & Western Encephalomyelitis: Encephalomyelitis is caused by a virus, which is transmitted by mosquitoes. The virus causes inflammation of the brain and spinal cord. The vaccine is very effective against the disease. Horses should be vaccinated yearly in the spring, before the onset of mosquito season. West Nile Virus: West Nile virus is transmitted by mosquitos. The virus causes inflammation of the brain and spinal cord. Horses should be vaccinated yearly in the spring, before the onset of mosquito season. Influenza: Influenza is a virus that causes high fever and respiratory infection. Horses travelling to shows, sales, racing events, etc. should be vaccinated every 6 months. Strangles: Strangles is a bacterial disease caused by Streptococcus equi. It is highly contagious and causes the following signs: high fever, abscessed lymph nodes, and respiratory infection. Horses may develop guttural pouch infections, sinus infections, purpura hemorrhagic, laryngeal paralysis, and bastard strangles. There is an intranasal vaccine which is more effective than the intramuscular vaccine. Horses should be vaccinated every 6 months on premises where the disease is endemic. |