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80% immunity from Pfizer vaccine lost in 6 months
Antibodies generated by the Pfizer vaccine dipped by more than 80% six months after the second dose, a study conducted in the United States has found. The research, led by Case Western Reserve University and Brown University, examined the blood samples of 120 nursing home residents and 92 healthcare workers, reports say. Here are more details on this.https://sg.news.yahoo.com/80-immunity-pfizer-vaccine-lost-143209918.html