Tianjin reported a human H7N9 AIV case on 13th, April 2017. The 58-year-old female patient, surname Zhou, lived in Wuqing district of Tianjin city. She was admitted into designated hospital for severe pneumonia and her sample tested positive for H7N9 nucleic acid by Tianjin CDC. All close contacts of the patient are under close medical monitoring, no one has showed ILI symptoms so far.