A third dose of Pfizer vaccine is to be offered to vulnerable people in Israel, as concern mounts about a sharp drop in immunity after six months.
Pfizer recently revealed concerns about limited efficacy of its vaccine after a certain amount of time, going as far as recommending a regular booster shot.
The company did not reveal any data backing the assertion about the requirement for a booster shot, leading many to believe that pure financial gain might be behind the ploy.
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