The U.S. Food and Drug Administration on Wednesday (Jul 13) authorized Novavax's Covid-19 vaccine for emergency use in adults. It is the fourth coronavirus vaccine available in the United States, and it uses a different type of vaccine technology than the shots already available.
Novavax's vaccine will be available as two-dose primary series for people 18 and older.
Unlike some other Covid-19 shots, Novavax's vaccine can be stored in standard refrigeration.
About 1 in 3 Americans has still not been vaccinated against Covid-19, more than 100 million people. Many officials and health care workers hope that a vaccine like Novavax's, which uses more familiar technology, may be enough to persuade people who've been hesitant to get inoculated.