Johnson & Johnson on Wednesday kicked off a final 60,000-person trial of a single-shot COVID-19 vaccine that potentially would simplify the distribution of millions of doses compared with leading rivals using two doses.
The company expects results of the Phase III trial by year-end or early next year, Dr. Paul Stoffels, J&J’s chief scientific officer, said in a joint press conference with officials from the National Institutes of Health and the Trump administration.
