Volume 23, Number 12—December 2017
Synopsis
Spread of Canine Influenza A(H3N2) Virus, United States
Figure 1

Figure 1. Incidence of canine influenza A(H3N2) virus RNA–positive dogs in the Chicago, Illinois, area, USA, March 14–April 27, 2015. A) Weekly testing summary of samples collected within Illinois. B) Weekly testing summary of samples collected in all other states. C) Presence of virus in the Midwest region, by US postal code.
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