Worms & Germs Blog

Tag Archives: eastern equine encephalitis (EEE)

Eastern Equine Encephalitis: Ontario

Posted in Horses
It’s that time of year. Mosquitoes have been annoying me for months (I get bitten multiple times a day where I live, even with repellent), but now they’re becoming a bigger issue. While mosquitoes bite all season, some of the diseases they transmit are only a significant risk at certain times of year. One high… Continue Reading

Updated Equine West Nile Virus and EEE Maps

Posted in Horses
The title says it all. Here are the most recent maps from WormsAndGermsMap showing equine cases of West Nile virus and Eastern Equine Encephalitis (EEE) virus infection. As with any surveillance, the maps only capture a percentage of the true number of cases, but looking at the geographic distribution and trends in date-of-onset can still be informative. West… Continue Reading

Equine Arbovirus Update

Posted in Horses, Other diseases
Arboviruses (ARthropod-BOrne viruses) are viruses that are spread by insects, often mosquitoes. As I’ve written about recently, mosquito biology and differences in reservoir species mean that mosquito-borne viruses can have quite different patterns of distribution and spread. As is common, the occurrence of West Nile virus infection in horses tends to ramp up in late… Continue Reading

Eastern Equine Encephalitis Season in Full Swing

Posted in Horses, Other diseases, Vaccination
‘Tis the season for mosquitoes, so ‘tis the season for some nasty vector-borne diseases. Few are worse that Eastern Equine Encephalitis (EEE), a viral infection that causes typically fatal disease in horses, and less commonly other species, including people. Cases tend to start mid-summer and peak late summer to fall, depending on the mosquito dynamics… Continue Reading

Ontario eastern equine encephalitis update

Posted in Horses
During today’s Canadian Equine Infectious Disease Surveillance call, Dr. Alison Moore from the Ontario Ministry of Agriculture Food and Rural Affairs gave an update on equine infectious neurological disease cases in the province. Prominent amongst those disease is eastern equine encephalitis (EEE). This very mosquito-borne viral infection is fortunately pretty rare in horses and is… Continue Reading

EEE in Ontario 2014

Posted in Horses
2014 was the worst year ever for Eastern Equine Encephalitis (EEE) in Ontario (though our numbers still pale in comparison to more endemic areas in the southern US, such as Florida). A recent article published in the Animal Health Lab (AHL) Newletter (December 2014) by Dr. Alison Moore from OMAFRA sums things up well: "Twenty-two… Continue Reading

EEE alert, Ontario

Posted in Horses
The Ontario Ministry of Agriculture Food and Rural Affairs (OMAFRA) has issued an Equine Health Advisory in response to diagnosis of Eastern Equine Encephalitis (EEE) in a horse in Stormont/Dundas/Glengarry, in eastern Ontario. The 12-year-old gelding died, which is the typically outcome with this disease in horses. EEE is a devastating but fortunately rare (at least… Continue Reading

EEE in Florida horse

Posted in Horses
It’s hard to think about mosquito-borne disease season here at the moment, with temperatures in Ontario still going down to freezing, but the highly concerning disease eastern equine encephalitis (EEE) has been identified in a Marion County, Florida horse. This mosquito-borne virus causes highly fatal infection in both humans and horses. People don’t get it from… Continue Reading

Eastern Equine Encephalitis alert: Ontario

Posted in Horses
‘Tis the season… Eastern equine encephalitis (EEE) is a very serious disease that’s fortunately rare in Ontario, but when it happens, it’s bad news. It’s a viral disease transmitted by mosquitoes (similar to West Nile virus), and we often see a couple of horses affected every year, usually starting around now (late August) and extending… Continue Reading

Rare Eastern equine encephalitis infection in a dog

Posted in Dogs
An 8-week-old puppy in Van Buren County, Michigan has died from infection by a virus that normally infects horses.  This is a rather rare occurrence of a nonetheless devastating infection. The puppy was euthanized after developing seizures and other neurological abnormalities, and Eastern equine encephalitis (EEE) virus infection was ultimately diagnosed.  Testing for this and other… Continue Reading

Eastern Equine encephalitis alert: Ontario

Posted in Horses
If I was reincarnated as a mosquito, I’d want to live where I do now (convenient, eh?). I live in the country surrounded by areas of "protected wetland," which, in many cases, is a fancy word for swamp. I try to avoid mosquitoes, but getting bitten is a regular (daily) event. As I was getting swarmed… Continue Reading

Eastern equine encephalitis in South Carolina

Posted in Horses
‘Tis the season… As summer progresses, mosquito-borne infections become more common. While West Nile virus typically peaks later in the summer or early fall, Eastern equine encephalitis (EEE), a much more deadly viral neurological disease, tends to start cropping up earlier in the season. Recently, EEE was diagnosed in two horses in Horry and Marion… Continue Reading

Equine Infectious Neurological Disease Update: Ontario

Posted in equIDblog
The latest update on equine infecious neurological diseases in Ontario (Eastern equine encephalitis (EEE), West Nile virus (WNV), rabies and neuropathic equine herpevirus type 1 (EHV-1)) is available from the Ontario Ministry of Agriculture, Food and Rural Affairs. There aren’t a lot of surprises, and it’s good to see the numbers of cases have remained… Continue Reading

More Mosquito-Borne Mayhem

Posted in equIDblog
The mosquito-borne diseases eastern equine encephalitis (EEE) and West Nile (WNV) continue to rear their ugly heads in the northeast as we get further into the late summer season during which they are most common. On August 13 there was an unconfirmed report of a case of West Nile in a horse at Woodbine Racetrack,… Continue Reading