International
Older recipients of the Pfizer vaccine develop fewer COVID-19 antibodies than young Pfizer recipients and Moderna recipients of all ages, according to international research. A study testing the blood of 167 people who received Pfizer or Moderna vaccines found Pfizer recipients aged 50 and over had fewer antibodies in their system than those aged under 50. The researchers found no age-related difference in antibody levels for Moderna recipients, and say antibody levels overall were greater for Moderna recipients than Pfizer.
From:
What The Study Did: Researchers compared antibody responses by age among adults who received two doses of either the Pfizer/BioNTech or Moderna COVID-19 vaccines.
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