From the AVMA:
Many of you are already aware of the ongoing canine influenza outbreak in the Chicago area. We’re contacting you to make you aware of a recent and significant development in the outbreak.
Cornell University issued a press release on April 12, 2015 that states that the ongoing canine influenza in the Chicago area is due to the H3N2 subtype of canine influenza, not the H3N8 subtype that has been seen in the U.S. previously. This is the first identification of the H3N2 subtype outside of Asia. At this time, it is not known if the currently available H3N8 vaccines will provide any cross-immunity to dogs exposed to the H3N2 subtype.
We have updated our canine influenza resources, and will continue to update them as needed when more information is available. We will also post updates on our social media channels, including Facebook, Twitter, Google+ and LinkedIn.