Bird Flu Alarm

How many people have been infected with this H7N9 virus

and how many have died in China since 2013?

Since 2013, the World Health Organization has reported 1,223 human infections with the H7N9 virus in China, as of a WHO report dated February 20, 2017. About 40% of those infected have died (note: reporting of deaths associated with H7N9 virus infection generally lag behind case reports). Numbers of reported human cases of H7N9 virus infection by annual epidemic are listed as follows:

1st epidemic: 135 cases;
2nd epidemic: 320 cases;
3rd epidemic: 226 cases;
4th epidemic: 123 cases;
5th epidemic: ongoing (424 human infections as of February 20, 2017).