In the early days of 2020, as science looked for answers to a mysterious viral outbreak in central China, a prominent Chinese virologist stepped forward to share critical data with the world. Zhang Yongzhen’s disclosure of the genome of the virus that causes Covid-19 was a crucial step in the race to combat the pandemic, helping researchers globally to identify the pathogen and create vaccines to counter it. He was lauded for his integrity by the scientific community, but in the years since, people who know Zhang say he has faced a series of unprecedented roadblocks in his career in China – with yet another barrier placed in front of his research over the past week. On Sunday and Monday, Zhang, 59, slept overnight in protest outside his lab at the Shanghai Public Health Clinical Center after administrators closed the facility abruptly for renovations, according to accounts posted on his Weibo social media page.…
