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Tribune News Service
Tribune News Service
National
Nicole Villalpando

Do I really need to get a COVID-19 booster? CDC real-world study confirms effectiveness

CDC Centers for Disease Control and Prevention United States

The Centers for Disease Control and Prevention released a study Friday that provided real-world U.S. numbers about the effectiveness of boosters for both the delta and omicron variants of COVID-19.

The study analyzed cases from 383 emergency departments and urgent care clinics and 259 hospitals across 10 states from Aug. 26 to Jan. 5. It looked only at people 18 and older.

The study found that mRNA vaccines made by Pfizer and Moderna have waning effectiveness 180 days after the second dose. The effectiveness went from 94% to 82% for keeping people out of the emergency room and urgent care and from 94% to 90% for people keeping people from being hospitalized.

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