Based on the strength of the trial's results, Pfizer says it will ask the FDA for emergency use authorization rather than enroll more people for clinical trials.
A concussion can make it difficult to converse in a noisy room. Scientists say that's because the injury has impaired the brain's ability to process sounds.
Like any government agency, the biggest American foreign aid group has its problems. This week, its new administrator Samantha Power outlined her solutions.
The first vaccine required for school was for smallpox, over 200 years ago. And for decades, all states have required that kids be vaccinated against contagious diseases like polio to attend school.
Dozens of Republican state officials are suing over the White House's COVID-19 vaccine mandate that they say is unconstitutional and threatens business.
NPR's Steve Inskeep talks to Surgeon General Vivek Murthy about President Biden's latest vaccine rules for 100 million workers, and the impact on the pandemic of getting kids ages 5-11 vaccinated.
The Biden administration says millions of U.S. workers must be vaccinated by Jan. 4. Young people are protesting at the climate summit. Some police have ties to a far-right anti-government militia.
There is a glaring irony of the pandemic: Countries like the island nation of Tonga that have managed to keep the virus at bay may be some of the last to recover from the economic impact.