Hard to do when no one is going to admit anything. Just like a murder will deny he did it. Its in their best interests to deny everything.
The gain of function research was reinstated in Dec 2017
The virus was here in less than 2 years
Gain of function increase a pathogens transmissibility. Yep that's happened
Gain of function also increases the pathogens immunogenicity. Yep we are having a problem with that.
One month(or so) in Jan 2020 after the virus was known the United States is convening an expert panel to revisit the rules for gain-of-function research.
Fauci denied any gain of function research going on and denied increasing transmissibility is gain of function, which is exactly part of what its is.
But it all must be coincidence.
And to mention....
Gain-of-function studies are most usually applied in virology and have revealed many details regarding the biological mechanisms behind virus transmission and replication.
The high replication and mutation rate of viruses commonly leads to escape mutants, lineages that have acquired changes to their genome that lessen or eliminate the affinity of natural or vaccine-induced antibodies towards the virus, while not notably lowering survival.
Most mutations a virus may acquire are deleterious to virus function, though in some cases mutation can both enhance virulence and allow better immune escape.
What is Gain-of-Function Research? | News-Medical