SCIENTISTS studying the effectiveness of the Pfizer-BioNTech vaccine have found the risk of Covid infection increases with the amount of time since people have had their second jab.
Thursday, 25 November 2021
Vaccine study shows crucial need for boosters as Pfizer's point of warning pinpointed
SCIENTISTS studying the effectiveness of the Pfizer-BioNTech vaccine have found the risk of Covid infection increases with the amount of time since people have had their second jab.
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