No credible evidence supporting claims of the laboratory engineering of SARS-CoV-2 Emerging Microbes & Infections S-L. Liu et al. The emergence and outbreak of a newly discovered acute respiratory disease in Wuhan, China, has affected greater than 40,000 people, and killed more than 1,000 as of Feb. 10, 2020. A new human coronavirus, SARS-CoV-2, was quickly identified, and the associated disease is now referred to