12 Horses Confirmed With West Nile Virus

As of last week, there were 12 confirmed cases of equine West Nile Virus. Colorado State Veterinarian Dr. Keith Roehr reminds horse owners

Roehr: "A key thing for horse owners to be aware of is that the vaccinations are a very effective tool to prevent disease — they've been very effective and safe. Horses that have had vaccinations in past years, need boosters vaccination. If they have had one already this year, they are probably protected. Horses that have not been vaccinated in previous years, should have an initial vaccine and then a booster within three to four weeks after the initial vaccination."

In addition to vaccinations, horse owners also need to reduce the mosquito populations and their possible breeding areas. Recommendations include removing stagnant water sources, keeping animals inside during the bugs' feeding times, which are typically early in the morning and evening, and using mosquito repellents.

Although the chances that your horse would become infected may be slight — if it does happen, Dr. Roehr say

Roehr: "Many times it has about a 30 percent mortality rate. So 30 percent of the horses die or have to be euthanized. But there are a umber of horses — just like people — that get the disease and never recover so they have some potential to have ongoing neurological deficient or problems that don't resolve."