Within weeks, scientists at the Walter Reed Army Institute of Research expect to announce that they have developed a vaccine that protects people from COVID-19 and all its variants, even Omicron, as well as from previous SARS-origin viruses that have killed millions of people worldwide. The achievement is the result of almost two years of work on the virus. The Army lab received its first DNA sequencing of the COVID-19 virus in early 2020. Very early on, Walter Reed’s infectious diseases branch decided to focus on making a vaccine that would work against not just the existing strain but all...