Waning Immunity Study Shows Declining Effectiveness Of 3Rd Dose Of Mrna Covid Vaccines
Data also show people who are Hispanic or Black half as likely to receive booster than people who are white. A nationwide study from the U.S. Centers for Disease Control and Prevention (CDC) is the first to show that immunity against severe COVID-19 disease begins to wane 4 months after receipt of the third dose of an mRNA vaccine (Pfizer or Moderna). Waning immunity was observed during both the Delta and Omicron variant waves in similar fashion to how mRNA vaccine effectiveness wanes after a second dose....