Pfizer RSV vaccine maintains protection in older adults over two seasons in trial

[ad_1] Respiratory syncytial virus vial. Manjurul | Istock | Getty Images Pfizer‘s vaccine against respiratory syncytial virus maintained protection for older adults across two full seasons of the disease in an ongoing late-stage clinical trial, the company announced Thursday. The shot’s efficacy declined slightly compared with the levels of protection after one RSV season, but…

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