The Centers for Disease Control and Prevention (CDC) reports that 55.8 per cent of Americans over the age of 12 are fully vaccinated, and therefore do not need to concern themselves with a booster yet.
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Pfizer is about to seek U.S. authorization for a third dose of its COVID-19 vaccine, saying Thursday that another shot within 12 months could dramatically boost immunity and maybe help ward off the latest worrisome coronavirus mutant.
Research from multiple countries shows the Pfizer shot and other widely used COVID-19 vaccines offer strong protection against the highly contagious delta variant, which is spreading rapidly around the world and now accounts for most new U.S. infections.
