Posted in Web FDA grants emergency authorization to Johnson & Johnson vaccine February 28, 2021 The FDA granted emergency use authorization, or EUA, to Johnson & Johnson for its Covid-19 vaccine. This is the third vaccine available in the U.S. It is a single-dose vaccine. https://www.nbcnews.com/health/health-news/fda-grants-emergency-authorization-johnson-johnson-vaccine-n1258878