EQUUS - - Inbrief -

The first and best de­fense against EEE and WEE is vac­ci­na­tion. The Amer­i­can As­so­ci­a­tion of Equine Prac­ti­tion­ers (AAEP) in­cludes EEE/ WEE on its list of “core vac­cines,” which are rec­om­mended for the ma­jor­ity of horses. A sin­gle for­mula pro­tects horses against both EEE and WEE. The vac­cine con­tains an in­ac­ti­vated ad­ju­vanted whole virus, which means that it

con­tains whole viruses that have been ren­dered in­ac­tive, com­bined with an ad­ju­vant, a sub­stance that stim­u­lates a greater im­mune re­sponse.

Your vet­eri­nar­ian can ad­vise you on the most ap­pro­pri­ate vac­ci­na­tion sched­ule for your horse. An adult horse who has never been vac­ci­nated needs a two-dose se­ries, four to six weeks apart, which needs to be com­pleted be­fore mosquitoes and other in­sect vec­tors are ac­tive for the sea­son. An adult horse who has been pre­vi­ously vac­ci­nated needs an an­nual booster prior to the start of mos­quito sea­son. In some cases---for horses with com­pro­mised im­mu­nity, for ex­am­ple, or those who live in ar­eas where mosquitoes are ac­tive year-round---your vet­eri­nar­ian may rec­om­mend boost­ers ev­ery four to six months.

Chang­ing wa­ter in larger troughs at least once a week will pre­vent any hatched mos­quito lar­vae from reach­ing ma­tu­rity.

Dis­tri­bu­tion of re­ported equine EEE cases in 2016 (116 to­tal cases)

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