I watched several videos of interviews with this Doctor. I did somer background checking on him to find his credentials. https://vaccines.global-summit.com/europe/ocm/2017/geert-vanden-bossche-univac-belgium. This guy is legitimately a vaccine expert. He specializes in the development of vaccines and is a true believer in them. However, he is stating that our use of a vaccine during an epidemic is extremely dangerous and will allow a greater number of mutations. Some mutations are more benign, but some can become much worse than the original. He explains his tracking of mutations and how it is far different than historical virus events because of the intervention of these new vaccines in the middle of the pandemic. His reasoning is elementary and follows in line with the basic tenets of biology.