Pfizer Vaccine Efficacy

• 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
  
• Pfizer, AstraZeneca vaccines 87% effective in 60+ age group after one dose: data

  The analysis is based on more than 3.5 million people in South Korea aged 60 and older and included 521,133 people who received a first dose of either Pfizer or AstraZeneca.

  World

  May 7, 2021
  
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• Pfizer says its vaccine is 94 per cent effective in preventing asymptomatic infection

  The analysis also shows real-world evidence of the vaccine's effectiveness against a highly infectious variant of COVID-19 first discovered in Britain.

  World

  Mar 11, 2021
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• Pfizer says COVID-19 vaccine can be stored at higher temperatures

  The update comes as two studies from Israel found that the vaccine greatly reduced virus transmission, and the shot was backed by two of the S. African government's top advisers.

  Health

  Feb 19, 2021