Thousands of people left messages on the social media account of the late Chinese COVID-19 whistleblower Li Wenliang on the anniversary of the day he learned of possible pneumonia-causing virus cases in Wuhan and shared the information with fellow doctors. On December 30, 2019, Dr Li — an ophthalmologist at a hospital in Wuhan where the Sars-CoV-2 virus outbreak was first detected — saw a medical report showing potential SARS coronavirus cases were confirmed in the city, he wrote in a post on his Weibo account on January 31. In early January, after the information on “SARS cases” was shared...