(ChurchLeaders) On Nov. 9, pharmaceutical manufacturer Pfizer and the biotechnology company BioNTech announced that their vaccine candidate was found to be more than 90 percent effective in preventing COVID-19. “With today’s news,” said Dr. Albert Bourla, Pfizer Chairman and CEO, “we are a significant step closer to providing people around the world with a much-needed breakthrough to help bring an end to this global health crisis.” A week later, biotech company Moderna Inc. said that its own experimental vaccine was 94.5 percent effective in preventing disease in a clinical trial.
Here’s what you should know about vaccines and these RNA vaccine candidates.