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This report describes COVID-19 vaccine effectiveness time frames among people who received their first and second doses of the vaccine series, and effectiveness of...

Background: The Omicron (B.1.1.529) variant of SARS-CoV-2 has rapidly achieved global dissemination, accounting for most infections in the United States by December 2021. Risk...

This Viewpoint from the CDC reviews how available vaccines have shaped the past year of the COVID-19 pandemic and the challenges that...

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CDC

CDC Newsroom - 1 week

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Press releases, advisories, telebriefings, transcripts and...

COVID Data Tracker - 21 hours

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CDC’s home for COVID-19 data. Visualizations, graphs, and data in one easy-to-use...