According to Novavax, the vaccine's manufacturer, it had a 100% efficacy against the original strain of the coronavirus and 93% efficacy against more worrisome variants that have subsequently appeared.Read More
The biotech company Novavax says its COVID-19 vaccine is 89% effective at preventing the illness, according to an interim analysis of a large study conducted in the U.K. The results come from a clinical trial involving more than 15,000 volunteers, of whom more than a quarter were older than 65.Read More
There are lots of different ways to formulate a vaccine, and all of them are now being considered for coronavirus. Some vaccines use common methods to confer immunity, while others are entirely experimental — they’ve never before been approved for use.Read More
