Objective To analyze the epidemiological characteristics and research progress of human infection with avian influenza A(H7N9) virus and the present problems during control and prevention,and to offer a proposal for future control and prevention.Methods Face-to-face interviews were used to collect the epidemiology data and the control measures related information.Then the epidemiological characteristics and the effect of control measures were analyzed.Results Among 44 persons confirmed with H7N9 virus infec...