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Home » Pfizer-BioNTech COVID-19 Vaccine Efficacious, But Less So, Against Delta Variant
Pfizer-BioNTech COVID-19 Vaccine Efficacious, But Less So, Against Delta Variant
Pfizer and BioNTech announced Thursday that their COVID-19 vaccine is effective against the Delta variant after two doses and that a third dose will boost the protection even more.