This live blog has ended, please click here for NBC News' continuing coverage of Covid-19.
As the world inches towards 1.5 million Covid-19 deaths, the U.S. continues to lead the toll, passing 13 million confirmed cases on Saturday.
Public health officials in Santa Clara County, California, followed San Francisco and Los Angeles on Saturday in announcing stricter stay-at-home rules.
Meanwhile, the first doses of Pfizer's Covid-19 vaccine are on the move to the U.S. from Belgium, a source familiar with the planning told NBC News. That comes as a panel of U.S. advisers are set to meet early next week to vote on how scarce, initial supplies of the vaccine will be allocated.
- 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.
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