"When we already have enough challenges with people understanding the science behind vaccines, we cannot afford to allow the development and approval of a vaccine to be further politicized," Dr. Vivek Murthy told Ian Bremmer on GZERO World. The former US Surgeon General expressed concerns that politics could hurt the process of development and distribution while shaking public confidence. He also discusses the current state of development for a COVID-19 vaccine, and possible scenarios for its efficacy once available.