Worms & Germs Blog

Tag Archives: influenza

Canine Influenza Update: Ontario, Oct 20

Posted in Dogs
Unsurprisingly, more cases have been identified since the re-introduction of H3N2 canine influenza to central Ontario was identified late in the week. That’s expected since the start of outbreak investigation is dedicated to figuring out the extent of the problem. Cases identified in the first few days or week reflect things that happened before we… Continue Reading

Return of canine influenza: Ontario, Canada

Posted in Dogs
Canine influenza virus (CIV) has been re-introduced to Ontario, again in the Muskoka region.  Variant typing for the latest case should be available shortly, but in all likelihood this is once again H3N2 CIV. More details will follow; however, dog owners and veterinarians in this region should be aware of the return of this highly… Continue Reading

International animal disease mapping

Posted in Dogs
We’ve tried a number of different infectious diseases initiatives in the past, aimed at increasing infectious disease education and awareness of both veterinarians and pet owners. Some have worked very well (like this blog), others less so. However, there’s still a lot that can be done. Here’s our latest initiative – whether it flies or… Continue Reading

Update: Canine influenza, US and Canada (May 18)

Posted in Dogs
The latest IDEXX Laboratories maps and case list are below. Canine flu continues to cause problems in some parts of the US, and is spreading in some states. California and Nevada have had active flu for a few months, but it may be abating. New clusters are popping up in other areas, most notably in… Continue Reading

Update: Canine influenza, Ontario (April 23)

Posted in Dogs
I’ve been holding off saying “it’s gone” but based on all the information we have at the moment, there’s no evidence of ongoing canine flu activity in Canada, at least for now. No new cases have been identified in a few weeks and we are now beyond the 28-day recommended quarantine period for all of… Continue Reading

Update: Canine influenza, Ontario (April 9)

Posted in Dogs
No news is good news… at least hopefully. The past week was quite encouraging. No new cases of canine influenza were identified in Ontario. A couple of “inconclusive” results were obtained from dogs in the Northumberland cluster that were previously positive. I approach these as essentially “weak positives,” because it means the test detected viral… Continue Reading

Update: Canine influenza, USA (April 4)

Posted in Dogs
I’m slowly catching up so here are last week’s data from IDEXX Laboratories on the canine flu situation in the US. The two main areas of concern remain California and Nevada. The number of new cases dropped quite a bit from the previous week. That’s encouraging, but it can be hard to interpret passive surveillance… Continue Reading

Update: Canine influenza, Ontario (April 2)

Posted in Dogs
I’ve been slow to provide an update, partly because I’ve been sick (not with canine flu) and partly because there’s fortunately less to report. Muskoka We are still testing but it’s pretty low yield. One challenge is the baseline upper respiratory disease activity in the area. There are various viruses and bacteria that cause flu-like… Continue Reading

Update: Canine influenza, Ontario (March 23)

Posted in Dogs
Windsor-Essex: Things have been quiet there for a while and this seems to be a nice success story. The two flu clusters that were active in January were contained and nothing new has been seen. Muskoka: Good progress has been made. Few new cases have been identified over the past two weeks. One problematic aspect… Continue Reading

Canine influenza disinfection

Posted in Dogs
I’m lazy so I’ll use the blog to answer a question that I’m getting a few times a day.  Today’s question: how to disinfect a veterinary clinic if there is a concern about canine influenza? The good news is that influenza viruses are pretty wimpy. They’re enveloped viruses, meaning they are covered by a fragile fatty… Continue Reading

Update: Canine influenza, US and Canada (March 13)

Posted in Dogs
United States (data courtesy of IDEXX Laboratories) Canine flu continues to cause problems in the US, particularly the west coast. Northern California (471 cases) and Nevada (207 cases) are the hotbeds. As ever, since these data are from diagnostic laboratory submissions, they probably represent the minority of cases (since most dogs with respiratory tract disease… Continue Reading

Update: Canine influenza, Ontario (March 10)

Posted in Dogs
Active canine influenza cases are still known to be present in two regions in Ontario. Muskoka A small number of dogs from the initial cluster of cases in the Orillia/Bracebridge/Gravenhurst region are still shedding the virus, as expected given this virus can be shed by some dogs for a few weeks. The dogs that made… Continue Reading

Update: Canine influenza, Ontario (March 8)

Posted in Dogs, Vaccination
Canine influenza continues to cause problems in Ontario. The central Ontario (Bracebridge, Gravenhurst, Orillia) clusters continue to be monitored, with new positives that were expected based on known contact with infected dogs. Whether these clusters have been contained (or are containable) remains to be seen. Testing and contact tracing continues. As mentioned previously, there was… Continue Reading

Update: Canine influenza, Ontario (March 5)

Posted in Dogs
The third cluster of canine flu in Ontario is a problem. While the first two, in the Windsor-Essex area, were relatively small and have been contained, the recent, ongoing central Ontario cluster is larger and more widespread. There are over 20 confirmed cases to date. However, it is very likely that the actual number is… Continue Reading

Canine influenza in Canada: New cluster

Posted in Dogs
While we had hoped that control of the two recent clusters of H3N2 canine influenza in Windsor-Essex, Ontario, meant that the province was again free of that virus, another cluster of infections has been identified, this time in Orillia, Ontario. Investigation is ongoing so the number of infected dogs is currently unclear, but as always,… Continue Reading

Update: Canine influenza, US (Feb 22)

Posted in Dogs
The table below has the latest H3N2 canine influenza numbers from IDEXX Laboratories. Some of the highlights include: Numbers continue to increase. Northern California and Nevada are the hotbeds, with northern CA cases increasing to 343 and Nevada 151. As always, these are just the tested cases, and they presumably represent a small minority of… Continue Reading

Canine flu outbreak update: US

Posted in Dogs
While we have hopefully been able to contain our two recent H3N2 canine influenza clusters in Canada (more on that later), this virus continues to spread in some parts of the US, particularly Northern California and Nevada. Since the last update from IDEXX Laboratories on February 2nd, they have identified another 164 cases in the… Continue Reading

Canine influenza update: Ontario

Posted in Dogs
Another case of canine influenza has been identified in Windsor-Essex, Ontario. Investigation of the source is underway and measures are in place to try to contain the virus. As with the other recent cluster of H3N2 canine influenza cases in that region, there is concern about entry of this virus into a naive canine population… Continue Reading

US canine flu update

Posted in Dogs
Canine flu has been a hot topic around here, but it’s a bigger deal in the US where the range of the disease is much larger. IDEXX Laboratories has released an update on their canine flu testing results. California has been getting a lot of attention over the past couple of weeks, but extensive flu… Continue Reading

Canine Influenza update and fact sheet

Posted in Dogs, Vaccination
The recent H3N2 canine influenza cluster in Ontario is hopefully still contained. Some infected dogs continue to shed the virus, but a good thing about flu is that there’s no long-term carrier state. Dogs will typically shed the virus for a couple of weeks, but then it should be gone. Accordingly, if the affected dogs… Continue Reading

Canine flu update: Ontario

Posted in Dogs
After identification of H3N2 canine influenza in two recently imported dogs in Ontario, testing of a group of in-contact dogs was performed. Five more infected dogs were identified, including both dogs that developed signs of influenza and those that stayed healthy. Infection of these animals was expected since these dogs were in close contact with… Continue Reading

Canine flu vaccination: Canada

Posted in Dogs, Vaccination
Not surprisingly, “should my dog be vaccinated against flu?” has been a very common question over the past few days. Here’s my take on vaccination of Canadian dogs, with the assumption that the recent H3N2 flu cluster in southwestern Ontario has been contained (something that is likely but is still to be determined). Who should… Continue Reading

Canine flu: What are the human health risks?

Posted in Dogs
Now that canine flu has been identified in Ontario, I’ve been inundated with questions, including “what is the risk to people?” It’s often tough getting the right message across, since there are some potential human health risks, but they are very low. The fact that we can’t say “it’s not a concern” sometimes gets taken… Continue Reading

Canine Influenza: Ontario

Posted in Dogs
H3N2 canine influenza has been identified in two dogs in Essex County, Ontario. The dogs were imported from Asia (via the US) in late December and were showing signs of respiratory disease the following day when they were examined by a veterinarian. A small number of dogs that had close contact with the affected dogs… Continue Reading