Why is the latter more likely? Gain of function experiments are performed regularly in labs, also on coronaviruses. Lab escapes have occured numerous times.
Shi Zhengli herself suspected at first that it came from one of their labs, because Wuhan is so far from the bats that are the suspected original host.
Shi Zhengli herself suspected at first that it came from one of their labs, because Wuhan is so far from the bats that are the suspected original host.