Pfizer and its vaccine partner BioNTech have started an application to request the Food and Drug Administration's approval for its COVID-19 vaccine.

The U.S. Capitol Police have close to 2,000 uniformed officers, more than the Atlanta Police Department.

The agency's annual budget is around half a billion dollars, which is larger than the budget for the entire Detroit Police Department.

Eighty-year-old Nardo Samson, a retired policeman, lay dying in the back of a makeshift ambulance. It was nearly Easter. A surge in coronavirus cases triggered yet another lockdown in the capital Manila, where a confusing patchwork of quarantines to contain the virus persists.

Each week, we answer "frequently asked questions" about life during the coronavirus crisis. If you have a question you'd like us to consider for a future post, email us at goatsandsoda@npr.org with the subject line: "Weekly Coronavirus Questions." See an archive of our FAQs here.

I'm vaccinated? Do I need to tell everyone who asks my status?

Back in the fall, Tom Wenseleers made a bold claim on Twitter. He tweeted that the new coronavirus variant emerging in the U.K. was more transmissible — or could spread more quickly — than over versions of the virus.

"I posted a graph [on Twitter] showing the U.K. variant had a transmission advantage over the other types of the virus," says Wenseleers, an evolutionary biologist at the University of Leuven in Belgium.

Dr. Nancy Messonnier, the top respiratory disease official at the Centers for Disease Control and Prevention who was among the first to warn the American public about how much the pandemic would change everyday life, is stepping down from the agency.

Facebook has almost 2 billion daily users, annual revenue that rivals some countries' gross domestic product, and even its own version of a Supreme Court: the Oversight Board, which the company created to review its toughest decisions on what people can post on its platforms.

This week, the board faced its biggest test to date when it ruled on whether Facebook should let former President Donald Trump back on its social network.