GSK Halts Enrollment In Maternal RSV Vaccine Trials As Setback Intensifies

The company has not revealed any details of the potential safety issue that led to the decision.

pregnant woman
GSK's maternal vaccine for RSV faces a setback • Source: Alamy

A setback in the development of GlaxoSmithKline plc's high profile vaccine candidate for respiratory syncytial virus (RSV) has intensified. The company announced on 28 February that rather than just pausing enrollment and vaccination in clinical trials evaluating the vaccine in pregnant women it is halting the trials due to a safety issue that has not been disclosed.

The studies impacted all involve pregnant women, including the Phase III GRACE trial evaluating the safety and efficacy of the...

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