Mosquito season is here, and so is the season for serious arbovirus-related neurologic disease in horses. Reports around the country are already citing equine cases of WNV and EEE during the summer of 2016. There is still a window of time to effectively vaccinate horses in Ohio against these viruses that are transmitted primarily by mosquitoes.  Ohio cases of WNV and EEE in horses the past few years have occurred from late August until mid-October.  Although the window of opportunity is closing, there is still time to provide a two-shot vaccination series within a three- to six-week period for horses that have not been vaccinated in the past year.

Vaccinate horses against West Nile Virus and Eastern Equine Encephalomyelitis

The Ohio Animal Disease Diagnostic Laboratory encourages veterinarians to remind the public that the most effective way to prevent these two diseases is to have the horses vaccinated by a licensed veterinarian. Taking steps to control the mosquito population, such as eliminating standing water in tires, water baths, and other sources, will also aid in the prevention of both WNV and EEE, both of which have the potential to cause severe neurologic illness and death in horses and in people.

People should also take steps to guard themselves against mosquitoes by applying mosquito repellent, avoiding being outdoors during peak mosquito feeding times and wearing protective clothing such as long sleeves and pants.

The ADDL offers PCR tests for both WNV and EEE in serum and tissues. We can assist veterinarians in submitting blood samples to NVSL for serologic testing. Please call the ADDL for more information at 614-728-6220, or visit our website test and fees search (pages 12 and 28) at http://www.ohioagriculture.gov/divs/ai/addl/addltests.aspx .

Source: ADDL