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US likely to authorize mix-and-match COVID booster shots

Federal regulators are expected to authorize the mixing and matching of COVID-19 booster doses this week in an effort to provide flexibility as the campaign for extra shots expands.

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Health advisers back J&J’s COVID booster shot

Johnson & Johnson told the FDA that an extra dose adds important protection as early as two months after initial vaccination — but that it might work better if people wait until six months later.

US preparing to reopen land borders for fully vaccinated

The U.S. will reopen its land borders to nonessential travel next month, ending a 19-month freeze due to the COVID-19 pandemic as the country moves to require all international visitors to be vaccinated against the coronavirus.

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