Pfizer’s RSV Vaccine Shows Efficacy In Older Adults, Setting Up Showdown With GSK

Pfizer’s bivalent vaccine candidate showed efficacy in RSV patients with multiple respiratory infection symptoms and may offer protection against the A and B strains of the virus.

RSV illustration
Pfizer is readying a BLA filing for its RSV vaccine candidate • Source: Shutterstock

Pfizer Inc. pulled into a virtual tie with GSK plc in the five-company race to bring to market a new vaccine to prevent respiratory syncytial virus (RSV) infections, announcing data on 25 August that show its bivalent candidate RSVpreF demonstrated efficacy in adults 60 and older with two or more symptoms of related lower respiratory tract infections and in patients with three or more symptoms as well.

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