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ActionsMoyen•23 March 2026•

1 min de lecture

Pfizer and Valneva Announce Success in Phase 3 Lyme Disease Vaccine Trial

Faits marquants

1Pfizer and Valneva announced positive topline results from the Phase 3 VALOR trial of their Lyme disease vaccine candidate.

2The vaccine candidate demonstrated 73.2% efficacy in reducing the rate of Lyme disease starting 28 days post-dose 4.

3The trial targeted participants aged 5 years and older in endemic regions across North America and Europe.

Pfizer and Valneva have announced positive topline results from the Phase 3 VALOR trial of their Lyme disease vaccine candidate. The clinical study demonstrated a 73.2% efficacy rate in reducing Lyme disease incidence starting 28 days after the fourth dose. The trial included participants aged five and older across endemic regions in North America and Europe, successfully meeting its primary endpoints. This development marks a significant milestone in creating the first human vaccine for Lyme disease in decades to address rising global infection rates. While Pfizer is a diversified pharmaceutical giant, these results serve as a major catalyst for Valneva’s valuation as it validates their lead pipeline candidate. The companies intend to proceed with regulatory submissions, potentially bringing a much-needed preventative solution to the global market.

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