What's in my vaccine?

What is in a “3-Way” vaccine?  A “4-Way?” “5-Way?” “6-Way?”

              We get a lot of questions about these confusing terms!  The “3-Way” vaccine has long been used to describe the combination vaccine containing Eastern Equine Encephalomyelitis (EEE), Western Equine Encephalomyelitis (WEE), and Tetanus.  For a “4-Way,” add influenza to those three vaccines just listed.  A five way provides protection against EEE, WEE, Tetanus, Influenza and Equine Herpesvirus (“rhinopneumonitis”), and a “6-way” contains all 5 components of a 5-Way, plus West Nile.  Although there is a combination vaccine that includes EEE, WEE, tetanus, and West Nile, the combination of EEE,WEE, tetanus, and influenza was on the market for years prior to the introduction of the combination with West Nile, so the “4-Way” term is usually reserved for the vaccine containing influenza and not West Nile.  Clear as mud?

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Contact the clinic and we can help you determine what vaccinations are appropriate for your horse.  Stay tuned in the coming days for more information on these diseases and why we vaccinate against them, as well as more answers to your frequently asked vaccination questions.