The Chinese doctor who was punished by police for trying to warn the world of the emergence of the new strain of coronavirus died Friday from the disease. He was 34.

Li Wenliang, one of the whistleblowers on China’s novel coronavirus now known as 2019-nCoV, died at 2:58 a.m. Friday in the Central Hospital of Wuhan, Hubei province, the epicenter of the coronavirus epidemic, the hospital said early Friday.