Researchers say they are seeing some waning of protection against Covid infections in double-jabbed people, BBCreports.

The real-world study includes data on positive Covid PCR test results between May and July 2021 among more than a million people who had received two doses of Pfizer or AstraZeneca vaccine.
Protection after two shots of Pfizer decreased from 88% at one month to 74% at five to six months.

For AstraZeneca, the fall was from 77% to 67% at four to five months.

Waning protection is to be expected, say experts.

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