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Is Pfizer or Moderna better for the elderly?: A Comprehensive Guide

According to the CDC's latest guidance for 2024-2025, there is no official preference for one mRNA COVID-19 vaccine over another for older adults. Both Pfizer and Moderna are considered safe and highly effective options, but research has highlighted some subtle differences in performance for seniors. This guide will help you understand the evidence surrounding whether **is Pfizer or Moderna better for the elderly**.