One vaccine dose is better than none, right? Well, that depends.
On Dec. 30, the United Kingdom approved its second vaccine, one developed by Oxford University and pharmaceutical company AstraZeneca. The UK government also announced that from now on, it'll prioritize the first doses of its vaccines. That means it'll vaccinate as many people as possible with their first dose, even if they have to wait up to 12 weeks to get their second. UK officials reason that although it might be better for any one person to receive a second dose promptly, spacing out the doses may end up saving more lives. President-elect Joe Biden also plans to change the U.S.'s policy of holding back a second dose for each person who receives a first dose. Read more...
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