MRna Vaccine Efficacy

• Fully vaccinated Americans do not need COVID-19 booster shots right now: Fauci

  Currently only about 48 per cent of the U.S. population is fully vaccinated. Some parts have far lower immunization rates, and in those places the delta variant is surging.

  Health

  Jul 11, 2021
  
• Canada says COVID-19 boosters may be needed but no approval request from Pfizer yet

  Pfizer and BioNTech announced Thursday they are developing a COVID-19 booster shot to target the highly transmissible Delta variant.

  Canada

  Jul 9, 2021
  
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• Pfizer developing booster shot to combat COVID-19 Delta variant

  The updated version of the Pfizer COVID-19 vaccine targets "the full spike protein of the Delta variant," the companies said in a statement.

  Health

  Jul 8, 2021