For the lab leak theory to be true, SARS-CoV-2 must have been present in the Wuhan Institute of Virology before the pandemic started. But there’s not a single piece of data suggesting this.
Scientists exploring the possibility of an animal origin for Covid-19 are still investigating the missing link between bats and human beings.
The delay in finding definitive answers to how novel infectious diseases come about is not unusual. Look at what happened to our search for Ebola virus.
Since the WHO’s investigation earlier this year, several papers have come to the same conclusion regarding the likely origins of SARS-CoV-2. Yet progress is too slow.
There are several earlier examples of people studying infectious pathogens being infected in the laboratory, even while working under strict biosafety conditions.