Depends on what you view as natural. They have been doing "Gain of Function" research which is designed to enhance viruses. https://www.newsweek.com/controvers

Depends on what you view as natural. They have been doing "Gain of Function" research which is designed to enhance viruses. https://www.newsweek.com/controversial-wuhan-lab-experiments-that-may-have-started-coronavirus-pandemic-1500503 https://www.newsweek.com/controversial-wuhan-lab-experiments...