CDC approves mix-and-match booster shots; Pfizer-BioNTech vaccine 90% effective for kids 5 to 11: COVID-19 updates

CDC approves mix-and-match booster shots; Pfizer-BioNTech vaccine 90% effective for kids 5 to 11: COVID-19 updates

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After the CDC approved booster shots for all three vaccines, it now will evaluate the safety of the Pfizer-BioNTech vaccine for kids.

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