On Apr. 7, 2020, Researchers at the University of Iowa and the University of Georgia announced they had developed a vaccine that fully protects mice against a lethal dose of MERS, a close cousin of the SARS-CoV2 coronavirus that causes COVID-19. The vaccine uses a harmless virus to deliver a MERS coronavirus protein into cells to generate an immune response, and may hold promise for developing vaccines against other coronaviruses diseases, including COVID-19.