Pfizer Inc.’s bivalent vaccine bolstered protective antibodies against the dominant omicron strains substantially more than its original booster in people older than 55, according to a compan…
By Robert Langreth | Bloomberg
Pfizer and German vaccine partner BioNTech SE compared blood samples from 36 people older than 55 who had received the bivalent booster with those from a control group of people over 55 who had received a fourth dose of the original shot. One month later, antibody levels against the widespread BA.4 and BA.
Pfizer’s own study, however, suggests that the bivalent shot “may induce a higher level of protection against the omicron BA.4 and BA.5 sublineages than the original vaccine,” the company said in its statement. The drugmaker has shared its results with the US Food and Drug Administration and said it plans to give them to regulators elsewhere soon.
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