Fig. 3From: Comparison of the first three waves of avian influenza A(H7N9) virus circulation in the mainland of the People’s Republic of ChinaGeographic Distribution of Avian Influenza A(H7N9) Cases. a Provinces reported H7N9 cases in China. b Counties reported H7N9 cases as of Wave 1. c Counties reported H7N9 cases as of Wave 2. d Counties reported H7N9 cases as of Wave 3Back to article page