Where far.Neither natural emergence lab escape hypothesis yet ruled out.There still direct evidence either.So definitive conclusion reached.That said , available evidence leans strongly one direction other.Readers form opinion.But seems proponents lab escape explain available facts SARS2 considerably easily favor natural emergence.It ’ documented researchers Wuhan Institute Virology gain-of-function experiments designed make coronaviruses infect human cells humanized mice.This exactly kind experiment SARS2-like virus could emerged.The researchers vaccinated viruses study , working minimal safety conditions BSL2 laboratory.So escape virus would surprising.In China , pandemic broke doorstep Wuhan institute .