Covid Vaccine: Pfizer, BioNTech and the beginning of the end?

In a press release on November 9, Pfizer gave a first taste of the results of the Phase 3 study of the Covid vaccine, which was jointly developed with German biotech company BioNTech. With an estimated efficacy of 90% and the start of the vaccination campaign possibly as early as January 2021, there is light at the end of the tunnel. But some hurdles still remain.