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Covid-19 vaccine booster shots raise tough issues for health authorities – Livemint

Western governments increase orders in case of waning immunity and variant threats, but need isn’t clear yet and much of world lacks initial doses

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While most countries are still cranking up their vaccination drives, some are already making plans to deliver millions of booster shots into arms later this year.Concerns that Covid-19 may morph into a seasonal menace are driving preparations in the U.S., the European Union and the U.K. for a winter vaccine booster program. The plans are precautionary, according to public-health officials, and it isnt yet certain they will be put into operation or at what scale.
Disease experts say the need for…

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