J&J 1-dose shot prevents COVID-19, but less than some others
Johnson & Johnson's long-awaited vaccine appears to protect against COVID-19 with just one shot – not as strong as some two-shot rivals but still potentially helpful for a world in dire need of more doses.
Pfizer says COVID-19 vaccine is looking 90% effective
Pfizer said Monday that an early peek at the data on its coronavirus vaccine suggests the shots may be a surprisingly robust 90 percent effective at preventing COVID-19, putting the company on track to apply later this month for emergency-use approval from the Food and Drug Administration.
