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Are Colorado Dogs Suffering
From A New (Swine?) Flu? 

By Patricia Doyle, PhD
Hello Jeff - The Colorado vets and labs dealing with this outbreak are stymied by this outbreak. There is speculation that they may be dealing with a virus that has not been isolated or even a new flu.  
At this time, it does not appear to be deadly as the dogs do not die. They do take about 3 weeks to recover.  
At this point in time vets think that the outbreak is winding down. They are testing the dogs for H1N1 but it is thought any positive results would be a long shot.
Local Colorado Outbreak In Dogs Stymies Vets, Labs
By Rachael Whitcomb
DVM News Magazine, Veterinary News (edited)
About 150 dogs in Durango, Colorado, have fallen ill with what one local veterinarian can only call a "mystery."
"We're in a tourist town, so generally after the holidays, there's a little surge of kennel cough," says Dr Stacee Santi, managing veterinarian at Riverview Animal Hospital in Durango.
But around mid-February [2011], she started seeing a "skyrocketing" number of dogs presenting with a cough much thicker than those suffering from kennel cough and some that had progressed to pneumonia.
"It was really bizarre," she says, adding the dogs typically were not responsive to antibiotic treatment.
At a quarterly meeting of the Four Corners Veterinary Association, comprised of all the veterinary practices in Durango, Santi discovered that other veterinarians in town were seeing the same thing. About 150 in all -- 50 at her practice alone-are suspected to have succumbed to the mystery ailment, but none died and all have made full recoveries after about 3 weeks.
The primary complaint of clients was the dog's cough, but Santi says clinical signs also included low-grade fever, nasal discharge varying from clear to thick, and occasional conjunctivitis. The coughing ranged from a dry cough similar to that found with kennel cough turning into a more moist cough, Santi says.
About 75 percent of the dogs identified to be suffering from clinical signs of the same ailment had spent time at a local dog daycare facility, but a number of the center's "regulars" showed no signs. Santi says the owner's dogs -- who regularly attend the daycare -- have not gotten sick. Veterinarians in neighboring towns have not seen any cases, either, Santi says.
"I don't know if we're dealing with a new virus that hasn't been isolated or a new form of the flu. At this point it's kind of up in the air," Santi says.
Samples were sent to the US Department of Agriculture and other veterinary epidemiologists, but experts have not confirmed the ailment yet, she says. About 75 percent of the samples were negative for everything, and others had some positives for more common infections, but the results were not consistent for any one particular problem, Santi explains. The samples have been negative so far for H3N8, canine influenza. Santi consulted with Dr Cynda Crawford of the University of Florida College of Veterinary Medicine, who told her canine flu has not been found to mutate yet.
"She doesn't think we're dealing with a new strain," says Santi. "So at this point we're moving forward." Testing is now being done for H1N1, "but everyone seems to pretty much think it's a long shot."
The outbreak seems to be winding down now, Santi says. But at its peak, her clinic was seeing 2 to 3 cases a day. "I'm kind of feeling like it's dying down, and the other vets are feeling the same (way)."
What's not dying down, however, is the interest in the sick dogs of Durango. "I've probably been getting 10 emails a day from people ... they want access to the samples," Santi says, adding the calls are from individuals in academia, research, and drug companies.
Veterinarians consulting with Santi declined to comment on their research, which is sponsored, but say it's an "interesting outbreak."
Communicated by: HealthMap Alerts via ProMED-mail promed@promedmail.org
The doggy day care is an interesting connection. Of the animals that have not been to the doggy day care, did they have direct contact with those that had? This would take some epidemiological legwork but it might track down the source of the situation. I also wonder what illnesses did the people at the day care center have? If there was human illness, perhaps it was passed to the dogs. 
Durango, in south western Colorado, can be located on the HealthMap/ProMED-mail interactive map at http://healthmap.org/r/0C6P. - Mod.TG
Patricia A. Doyle DVM, PhD Bus Admin, Tropical Agricultural Economics Univ of West Indies Please visit my "Emerging Diseases" message board at: http://www.emergingdisease.org/phpbb/index.php Also my new website: http://drpdoyle.tripod.com/ Zhan le Devlesa tai sastimasa Go with God and in Good Health
Benjamin Franklin said, "They that  can give up essential liberty to obtain a little temporary safety deserve  neither liberty nor safety." 
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