According to the HFPC of Pengzhou city on 24th April, after the reconfirmation from city and provincial CDCs, Pengzhou city of Chengdu city reported four new human H7N9 AIV cases. Until 24th April, Pengzhou city has reported 5 human H7N9 AIV cases, including one death(60-year-old male, surname Wang, reported death on 23rd April)