Drugmaker Johnson & Johnson has asked United States regulators for emergency use authorisation of its COVID-19 booster shot, the company announced, as the US government moves to expand its booster campaign to millions of vaccinated Americans.J&J said on Tuesday that it requested the US Food and Drug Administration (FDA) authorise boosters for people aged 18 and older who previously received the company’s one-shot vaccine.The drugmaker also said its submission includes data from a late-stage study that found a booster given 56 days after the primary dose provided 94 percent protection against symptomatic COVID-19 in the US and 100 percent protection against severe disease, at least 14 days after the booster shot.
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