GSK sues Pfizer as RSV vaccine war hots up

3 August 2023

UK drugmaker GSK (LSE: GSK) is suing Pfizer (NYSE: PFE) to add further intensity to the race to grab the lion’s share of the respiratory syncytial virus (RSV) vaccine market.

The lawsuit accuses Pfizer of infringing on four patents related to GSK’s RSV antigen shot Arexvy with the American company’s Abrysvo jab.

Both vaccines won approval in the USA in May of this year, becoming the world’s first RSV immunizations for adults.

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