Health Officials Advise Taking First Available Vaccine
Last Saturday, Feb. 27, the FDA gave Emergency Use Authorization for a single-dose COVID vaccine made by Johnson & Johnson. The vaccine uses a weakened cold virus to deliver genes for one of the COVID-19 virusâs key proteins, known as the spike protein â once in the cells, the viral protein activates the immune system. In contrast, the Pfizer and Moderna vaccines use a strip of genetic