New COVID-19 Vaccine Effectiveness Data Showcase Protection Gained by 3rd and 4th Doses | CDC Online Newsroom - Centers for Disease Control and Prevention (.gov)

COVID Vaccine Effectiveness Data Show Protection Gained by Boosters

A third and fourth COVID-19 vaccine dose offered substantial protection among adults with healthy immune systems who were eligible to receive them during Omicron variant evolution in early 2022, acco… [+2164 chars]

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