[quote=justsambam08;471261]Thanks everyone! The only reason I'm a little hesitant is because a)I don't plan on showing him, or even moving him (barring the barn owner sells to a tyrant or something) and b) although it is a youth show barn, since the emphasis is on youth, the showing season is really summer only, so none of the other horses are coming and going frequently either.
His WNV booster is due next year. He was boosted for WNV, flu, WEE/EEE/VEE and rabies in May, and so the only ones that need re-boosting are the flu and the three EE's. I probably will just vaccinate him against the tetanus, but it doesn't make me too thrilled to be giving him a 3-way either.
If you are in a situation where your vet recommends boostering for EEE, WEE, VEE every 6 months then you are also in a situation where WNV would be recommended every 6 months as these are all transmitted by biting insects. If you are just giving EEE, WEE yearly then you are giving them at the wrong time as they should be given right before the onset of biting insect season--early spring--the same as WNV.
Unless you are in the states bordering Mexico, you don't need to give VEE.
And I wouldn't be worried about giving him a 3-way vaccine unless he has some serious underlying health condition. The 3-way vaccines have been proven to provide good protection and millions of doses of multi-valent vaccine have been given with minimal adverse reaction. (Adverse reaction rates are well under 1% of vaccines given.)
Licensed Veterinary Technician