Pfizer to seek FDA nod for third vaccine dose; shots still protect

Pfizer is about to seek the US authorisation for a third dose of its COVID-19 vaccine, saying 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,…
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