Booster Shots Getting Regulatory Pushback

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Europe’s drug regulator warns excessive COVID boosters could lead to ‘problems with immune response,’ joining WHO in pushback

Europe’s vaccine strategy chief Marco Cavaleri said there is no data supporting the need for a fourth COVID vaccine dose. He also added that even if multiple boosters do prove to be necessary, they would need to be spaced out in the style of annual flu jabs, rather than delivered every several months.

He also warned that overly frequent booster doses could potentially lead to “problems with immune response.

“While use of additional boosters can be part of contingency plans, repeated vaccinations within short intervals would not represent a sustainable long-term strategy,” Cavaleri said at a media briefing. He also said boosters “can be done once, or maybe twice, but it’s not something that we can think should be repeated constantly.”

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