The origins of SARS-CoV-2: A critical review

Since the first reports of a novel severe acute respiratory syndrome (SARS)-like coronavirus in December 2019 in Wuhan, China, there has been intense interest in understanding how severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) emerged in the human population. Recent debate has coalesced around two competing ideas: a “laboratory escape” scenario and zoonotic emergence. Here, we critically review the current scientific evidence that may help clarify the origin of SARS-CoV-2. A review of the current literature supports a zoonotic origin for SARS-CoV-2 and emphasizes the need to focus on identifying the exact animal host through collaborative and carefully coordinated studies. This will enable the community to understand the roots of the COVID-19 pandemic as well as better prepare us for future pandemics