Lately we’ve seen an
inordinate number of dogs having a bad hair day. There’s a simple explanation
for that: Their owners have canceled their
grooming appointments. There’s a simple explanation for that, too: canine influenza.
In case you missed it – perhaps you just returned from a long
vacation on a remote Polynesian island – there has been an outbreak of dog flu
in the Midwest. Almost 2,000 dogs have been affected, with at least eight
deaths reported. It is now classified as an epidemic. The Chicago area has been hit the hardest.
In April we started an email campaign to tell you about the
disease: about how it causes a cough, low-grade fever, lethargy, nasal
discharge, watery eyes, sneezing, and a lack of appetite. We told you it was
similar to kennel cough. But unlike most cases of kennel cough, the flu can
make dogs very sick, with some needing supportive care such as hospitalization, IV fluids, and antibiotics. At the
time, the culprit appeared to be the H3N8 viral strain of canine influenza.
Then some smarty-pants scientists at Cornell and the
University of Wisconsin made a startling discovery: This wasn’t the old garden-variety flu, but a
new strain, related to the Asian influenza virus (A H3N2). Our existing vaccine probably didn’t provide
much benefit as a preventive for the new affliction. This was big news, and
there were updates almost every day in the newspapers or on the Internet. Nevertheless,
we got plenty of phone calls. The most common query was, “Should I vaccinate my
dog?”
Vaccines for Bordetella (kennel cough) and canine influenza
are non-core, or “lifestyle,” vaccines, meaning they’re optional based on a
dog’s exposure risk. We advise our clients on a case-by-case basis as to
whether their pet needs them. The Bordetella vaccine is usually required by
boarding kennels, puppy classes, groomers, and doggy day-care centers. Until
now, those providers haven’t required the flu vaccine, but that might change.
This flu outbreak caused severe economic hardship for many
kinds of pet professionals. I applaud those who did the right thing and closed
their doors during the worst part of the epidemic. But they lost plenty of
income, and they won’t soon forget it. Be prepared for some of them to start
requiring a flu shot before you cross their threshold with your four-legged
friend.
Why continue to use the existing flu vaccine when it doesn’t
protect dogs from the new Asian flu? One reason is that the original H3N8
strain might also have been a part of this outbreak. Another is that the
vaccine might confer some cross-protection against the newer Asian variety;
nobody knows yet whether that’s the case.
Most epidemics eventually fade away, and we hope this one is
no exception. But even then, none of us knows if or when it will emerge again
in the Midwest. Until the outlook improves, using the existing vaccine isn’t a
bad idea if you’re going to board your dog this summer. Keep in mind that there
are two vaccines in the series, two weeks apart, so your dog won’t have
immunity until one month after you start.
You can bet that every major veterinary pharmaceutical
company is scrambling to develop the first vaccine that is effective against the
Asian strain of influenza. Will we recommend immunization with this for certain
patients? Stay tuned; I’m not prepared to commit to yet another vaccination for
your dog. And I’ll base my recommendations on science, not hysteria.
In the meantime it looks like the risk of flu is still
present, but so far we in Lake County have been lucky. It’s okay to carefully
dip your toe in the water again. Board your dog if you must, but make sure the
kennel hasn’t had any recent cases of influenza. Check out DogVacay.com or
Rover.com if
you’re interested in in-home boarding.
I’m still reluctant to endorse dog park,
but we can’t keep our little buddies away from them forever. Ask your pet’s
other professionals whether they’re carefully screening the dogs they take
in. One thing they should be asking their
clients is whether the dog has been boarded within the past two weeks. (Sorry,
Fido, you’ll need a two-week quarantine.) If you’re satisfied, let your pooch
have a nice day at his doggy day care. And
take him to the groomer! He’s a little grungy, and he needs a haircut.