US refuses to extend time between coronavirus vaccine doses

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A healthcare worker gives a coronavirus vaccine to a woman in Miami, Florida

REUTERS/Marco Bello

THE UK’s controversial decision to increase the time between covid-19 vaccine doses has been thrust back under the spotlight after the US hasn’t followed suit, amid warnings that the strategy may backfire. However, the UK is no longer alone in its decision, with Canada and Germany both choosing to follow a similar plan.

In December, the UK made the surprise decision to lengthen the interval between doses of the Oxford/AstraZeneca and Pfizer/BioNTech vaccines from the recommended three or four weeks to 12 weeks.

The rationale …

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