COVID-19 Pfizer

• Updated Pfizer Omicron booster protects against subvariants, company says

  The companies said data from a trial in adult patients showed that the booster dose led to a substantial increase in neutralizing antibody levels against the BA.4/BA.5 variants.

  World

  Oct 13, 2022
  
• COVID-19: York Region vaccine clinic mistakenly administers undiluted vials, gives 6 times right dose

  “Due to an administration error, individuals at the medical centre received undiluted doses of Pfizer COVID-19 vaccine,” York Region Public Health said in a statement. 

  Health

  Jan 22, 2022
  
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• Longer gap between Pfizer COVID-19 vaccine shots boosts antibodies higher, study finds

  The study might help inform vaccination strategies against the Delta variant, which reduces the effectiveness of a first dose of COVID-19 vaccine.

  Health

  Jul 22, 2021