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U.S. FDA and the CDC approve fourth doses of the Pfizer and Moderna COVID-19 vaccines for people over the age of 50 years

The U.S. FDA and the CDC approve fourth doses of the Pfizer and Moderna COVID-19 vaccines for people over the age of 50 years.

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HealthU.S. FDA and the CDC approve fourth doses of the Pfizer and Moderna COVID-19 vaccines for people over the age of 50 years

The U.S. FDA and the CDC approve fourth doses of the Pfizer and Moderna COVID-19 vaccines for people over the age of 50 years.

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