Immunology

Immune response may vary with choice of COVID-19 booster

(HealthDay)—Immune response may vary with the choice of COVID-19 vaccine used for a third dose or booster following two doses of ChAdOx1 nCoV-19 (ChAd) or Pfizer BioNTech BNT162b2 (BNT), according to a study published online ...

Diseases, Conditions, Syndromes

Iceland tightens COVID rules as cases surge

Iceland on Friday said it would tighten its COVID rules as it battles a rise in new cases, including capping gatherings and mandating masks in crowded areas.

Vaccination

Mayo Clinic Q and A: COVID-19 vaccine boosters and third doses

DEAR MAYO CLINIC: Both of my parents have been vaccinated for COVID-19. The doctor told my mom she is eligible for a third dose of a COVID-19 vaccine, but my dad is not eligible for a booster now. Can you explain who needs ...

Vaccination

Study confirms effectiveness of COVID-19 booster vaccinations

A new study from the Center for Disease Control and Prevention confirms what Mayo Clinic and other experts have been saying: COVID-19 booster vaccinations improve protection against severe illness and hospitalization. The ...

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