A recent opinion piece published in PNAS discussed the sequence of events concerning the COVID-19 pandemic to provide evidence against the alleged leak of SARS-CoV-2 and the Ebola virus from viral research laboratories in Wuhan, China, and West Africa, respectively.
Researchers carried out real-time single-virion tracking in three dimensions to study the mechanisms and requirements of membrane attachment and fusion of SARS-CoV-2 with the host cell.