Covid live updates: States move to purchase Covid vaccines directly from Pfizer
More than 400,000 people have died of the coronavirus in the U.S., according to an NBC News tally early Tuesday. It's a milestone that seemed unimaginable at the start of the pandemic a year ago.
As U.S. health officials rush to vaccinate as many vulnerable people as possible, Covid-19 continued to spread at record high rates, with the United States facing a risk of new mutant virus strains spreading from the U.K., Brazil, South Africa as well as new strains emerging in the U.S.
Map of U.S. hot spots and worldwide Covid-19 cases.
Tracking surges in states across the country this winter.
Map of travel restrictions and which states have a mask mandate.
Click here for more of NBC News' Covid-19 coverage.
