As of April 22, 2013 (16:00 Beijing Time), additional two cases of human infection with influenza A(H7N9) virus were laboratory confirmed (16:00 April 21-16:00 April 22 Beijing Time). Both two cases are from Zhejiang.

To date, a total of 104 cases have been laboratory confirmed with influenza A(H7N9) virus in mainland China, including 13 recovered and discharged, 70 in hospitalization and 21 deaths. These cases are distributed over 6 provinces/municipalities, including Beijing (1 case, 0 death), Shanghai (33 cases, 12 deaths), Jiangsu (24 cases, 3 death), Zhejiang (40 cases, 5 deaths), Anhui (3 cases, 1 death) and Henan (3 cases, 0 death). So far, all confirmed human infections with A(H7N9) are sporadic cases, and there is no evidence of ongoing human-to-human transmission.