Recent research indicates that different strains of the novel coronavirus SARS-CoV-2 do indeed have meaningful differences in pathogenicity. This was difficult to confirm previously. SCMP summary article: https://www.scmp.com/news/china/science/article/3080771/coronavirus-mutations-affect-deadliness-strains-chinese-study … Original preprint: https://www.medrxiv.org/content/10.1101/2020.04.14.20060160v1 …pic.twitter.com/V9nGRIgmyp

