Third vaccine dose boosts Omicron protection, with some waning - CIDRAP

A third dose with any of 3 COVID-19 vaccines boosted effectiveness substantially.

Two doses of the AstraZeneca/Oxford, Pfizer/BioNTech, or Moderna COVID-19 vaccine offered limited protection against symptomatic infection with the SARS-CoV-2 Omicron variant, and although a third do… [+3104 chars]

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