EDCC Disease Update

The EDCC from September 21-29 reported cases of EEE, WNV and equine influenza in various states.

Infectious/contagious diseases were reported by the EDCC in Florida, California, Michigan and Washington state. Amy Dragoo

According to the Equine Disease Communication Center (EDCC), from September 21 to September 29 there were multiple reported cases of Eastern equine encephalitis (EEE), West Nile virus (WNV) and equine influenza (EI). Below you will find information that was reported from each state.

Florida—EEE and WNV

The Florida Department of Agriculture and Consumer Services confirmed one case of EEE in a 2-year-old Quarter Horse filly in Putnam County. The filly had onset of clinical signs on September 17 that included depression, fever, head pressing, inability to stand and muscle twitching. The filly was confirmed on September 25 and was euthanized. Her case marked the 18 confirmed case of EEE in Florida this year.

The Florida Department of Agriculture and Consumer Services confirmed a case of WNV in Lake County. The 5-year-old Quarter Horse gelding had onset of clinical signs on September 14 that included ataxia and muscle fasciculations. The gelding was confirmed with WNV on September 23 and is recovering. This was the 10 confirmed case of WNV for Florida this year.

California—WNV

The California Department of Food and Agriculture confirmed two cases of West Nile virus, one in Kings County and one in Stanislaus County.

The 8-year-old Quarter Horse stallion in Kings County had onset of clinical signs on September 17 that included ataxia, fever and becoming recumbent. The vaccinated stallion was confirmed with WNV on September 24 and is affected and alive.

In Stanislaus County, a yearling Thoroughbred filly had onset of clinical signs on September 16 that included ataxia, depression, leaning, reluctant to move and painful to palpation of the distal neck. The vaccinated filly was confirmed with WNV on September 21 and is affected and alive.

For more information about WNV go to the AAEP website.

Michigan—EEE

The Michigan Department of Agriculture and Rural Development reported cases of Eastern equine encephalitis in Oakland and Tuscola Counties.

In Oakland County, a 20-year-old Arabian mare had onset of clinical signs on September 12that included being down with inability to get up. She was confirmed with EEE on September 25. The unvaccinated mare was euthanized.

In Tuscola County, an 11-year-old pony mare had onset of clinical signs on September 12 that included ataxia and tremors. She was confirmed with EEE on September 25. The unvaccinated pony is recovering.

This was the first equid case of EEE from Tuscola County for 2020 and brought the total equid cases for Michigan for 2020 to 32.

Washington—Equine Influenza

The Washington State Department of Agriculture reported cases of equine influenza in King and Spokane Counties.

In King County, one horse was confirmed with equine influenza at a private facility that is under a voluntary quarantine.

In Spokane County, one horse was confirmed with equine influenza at a private facility that is now under a voluntary quarantine/

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