Gain of Function research role in COVID-19
They knew animal virus transmission to humans was only possible if the lab altered the virus. Zoological diseases don’t hold much threat of transmitting to humans. Gain-of-function research involves experimentation that aims or is expected to (or actually does) increase the transmissibility and/or virulence of pathogens. Such research aims to improve understanding of disease causing agents, their interaction with human hosts, and their potential to cause pandemic, but can also pose risks regarding biosecurity and biosafety.