Live coverage has ended, please click here for NBC News' latest coverage of Covid-19On Tuesday, 334 days after the first reported coronavirus death in China, the U.K. became the first country to roll out a clinically approved vaccine.

For many, seeing these shots injected into Britons' shoulder muscles will come as a much-needed morale boost at the end of a hellish year — one that's seen 1.5 million people killed, 65 million others sickened, and countless more subjected to economic hardship.

• 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.
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