1. Pfizer says its vaccine is 100% effective in preventing COVID-19 in adolescents Full story

2. California sheriff's office ignored warning, implied man's death was linked to COVID-19 vaccine Full story

3. Pfizer, BioNTech to test version of their COVID-19 vaccine that doesn't need ultracold storage Full story

4. There's a better way to treat rare bleeding disorders. Click here to join the discussion. 

5. Researchers testing administration of 2 vaccine doses from different drugmakers Full story

6. Biden administration creates volunteer network to improve COVID-19 vaccine confidence Full story

7. A top Walmart healthcare executive resigns Full story

8. Los Angeles hospital closing after 74 years Full story

9. Michigan wants more COVID-19 shots sent to states with rising cases Full story

10. US, 13 other countries question data in WHO's COVID-19 origins report Full story

11. 8 key first-time generic drugs the FDA approved in 2020 Full story

12. Daily COVID-19 stats, state-by-state:

• Percentage of vaccines administered
• Percentage of population vaccinated
• COVID-19 cases
• Test positivity rates + new cases
• Death rates