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Fatal H5N1 Influenza in a Dog: Alberta, Canada

By Scott Weese on December 20, 2025
Posted in Birds, Dogs
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We’re in the midst of a pretty bad human flu season. That’s a problem by itself, as it also means severe flu cases and hospitalization rates are high, and likely to increase. High flu activity in people also amplifies concerns regarding H5N1 avian influenza, because it creates more opportunities for an infection with both…

H5N1 Influenza: Peacock Exemption, More Sick Cats

By Scott Weese on December 3, 2025
Posted in Birds, Cats
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It’s nice to finally be able to talk about H5N1 influenza without discussing ostriches, but unfortunately, we still have things to talk about.

1) Peacocks. Specifically peacocks that don’t have influenza and aren’t going to be culled.

Last month I posted about an animal sanctuary in BC (Critteraid) that was dealing with an outbreak…

H5N1 Influenza at an Animal Sanctuary, British Columbia

By Scott Weese on November 11, 2025
Posted in Birds, Other animals, Other diseases
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Hot on the heels of the H5N1 influenza in ostriches debacle in BC comes a reported outbreak of H5N1 influenza at an animal sanctuary in the same province. The sanctuary (Critteraid Animal Sanctuary) is not one I’ve ever heard of before, but based on their website, it looks like a good operation…

New World Screwworm: Primer for Canadian Veterinarians

By Scott Weese on October 3, 2025
Posted in Birds, Cats, Dogs, Horses, Other animals, Parasites

I remember the first case of fly myiasis (aka fly strike, maggot infestation) in general practice. I was a very new grad called to look at a lamb owned by someone who had a few sheep. The complaint was that the lamb wasn’t doing well. It was laying down when I arrived and I grabbed…

H5N1 Antivirals: Should We Use Them in Animals?

By Scott Weese on April 11, 2025
Posted in Birds, Cats, Dogs, Worms&GermsPod
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For the longer answer to this question, check out the latest podcast episode I just posted on WormsAndGermsPod. For those who prefer to read the summary, here it is:

If you ask people on the street “should we use the limited antivirals we have available to treat people with flu on dogs and…

Podcast: H5N1 Influenza and Raw Pet Food

By Scott Weese on February 11, 2025
Posted in Birds, Cats, Dogs, Worms&GermsPod

The more H5N1 influenza continues to circulate in wild and domestic birds around the world, including here in North America, the more we have to be concerned about exposure of pets to H5N1 influenza through raw food diets. Recent documented infections in cats fed raw meat from infected birds have highlighted these concerns. For…

H5N1 Flu in Nevada Dairy Cattle: What’s the Concern?

By Scott Weese on February 10, 2025
Posted in Birds
  • The cattle were infected with the D1.1 strain of H5N1, which has been
…

H5N1 Influenza in Another Cat: Oregon

By Scott Weese on January 29, 2025
Posted in Birds, Cats
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Addendum: The Oregon Veterinary Medical Association has indicated in a release that the cat discussed below was euthanized because of the severity of disease. That’s more consistent with the severe disease that’s usually reported but I think the discussion below still applies since this seems to have been an initial primary respiratory disease presentation. It…

Culling Considerations in Disease Outbreak Response: Take 2

By Scott Weese on January 16, 2025
Posted in Birds, Other animals, Other diseases

My post earlier this week about culling considerations for control of disease outbreaks in animals generated some good discussion and ideas (and a surprisingly small number of “you’re an idiot” emails). Although that post was focused primarily on culling in response to influenza outbreaks, we can also think about it little more broadly…

To Cull or Not to Cull: Managing H5N1 in an Era of Endemicity

By Scott Weese on January 13, 2025
Posted in Birds, Other animals, Other diseases
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The recent situation has raised more discussion about the role of mass culling in response to H5N1 influenza infection in domestic / captive birds. After H5N1 flu was identified on an ostrich farm in British Columbia, the CFIA ordered all 400 birds to be culled, but the owner is trying to find options to preserve…

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The Centre for Public Health and Zoonoses offers information relating to zoonotic diseases (diseases transmitted from animals to people), including aspects of human and pet health, infection prevention and control, and vaccination. It is located at the University of Guelph, in Ontario, Canada.

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