Johnson & Johnson's single-shot COVID-19 
vaccine is safe and effective, confirms FDA
February 24, 2021 In an analysis released on Wednesday, the US Food and Drug Administration said the Johnson & Johnson COVID-19 vaccine has met the requirements for emergency use authorization. — Courtesy photo NEW YORK — In an analysis released on Wednesday, the US Food and Drug Administration said the Johnson & Johnson COVID-19 vaccine has met the requirements for emergency use authorization. The efficacy of the Johnson & Johnson vaccine against moderate to severe/critical COVID-19 across all geographic areas was 66.9 percent at least 14 days after the single dose va...