6. Catch up quick
An alarming number of Americans say they'd reject a COVID-19 vaccine, posing a risk to the country's ability to achieve widespread immunity. Go deeper.
President Trump's personal attorney Rudy Giuliani, 76, has tested positive for COVID-19, Trump tweeted on Sunday.
The U.S. should start seeing a "significant decrease" in COVID-19 mortality by the end of January, as the most at-risk populations are vaccinated, Moncef Slaoui, the top scientific adviser to Operation Warp Speed, told CNN's "State of the Union" Sunday.
The CDC is urging "universal face mask use" for the first time since the coronavirus pandemic began, citing recent case spikes as the U.S. has entered a phase of "high-level transmission" before winter officially begins.
Next year is "going to be catastrophic" in terms of worldwide humanitarian crises, World Food Program executive director David Beasley warned on Friday, per Reuters.
Russia began distributing its coronavirus vaccine on Saturday, making Sputnik V available at 70 different locations around Moscow.
World Health Organization officials warned Friday that although it's rare, recent data suggests some people may become reinfected with the coronavirus as their antibody response diminishes, CNBC reports.