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 data from diagnostic laboratory submissions. Do the reduced numbers mean there is less disease, or just that people are testing less (since they know flu is present in those regions and are therefore making presumptive diagnoses rather than confirming with testing). Let’s hope the decrease is actually an indication of reducing disease transmission, not owner/veterinarian testing fatigue.