David Reboussin, Ph.D., Joseph Rigdon, Ph.D. and Jaime Lynn Speiser, Ph.D. Guest columnists This holiday season, we are fortunate to receive a gift from modern medicine: vaccines for COVID-19. Moderna and Pfizer/BioNTech have completed clinical trials for their vaccines, which will likely be distributed widely in the coming weeks. The Pfizer/BioNTech vaccine received an emergency use authorization from the FDA on Dec. 10, meaning that it can be now used to protect people from getting COVID-19. Following a yearlong pandemic, news of COVID-19 vaccines becoming available brings mixed...