Last mentioned: Mar 25, 2026
Potential Launch
Anticipated commercial availability following regulatory approval and CDC recommendation.
Regulatory Filing
Expected submission of Biologics License Application (BLA) to the FDA.
Efficacy Results
Trial data shows over 70% efficacy against Lyme disease in endemic regions.
Phase 3 Initiation
Pfizer and Valneva launch the VALOR Phase 3 clinical trial for VLA15.
Pfizer and Valneva have reported positive Phase 3 results for their Lyme disease vaccine candidate, VLA15, demonstrating an efficacy rate exceeding 70%. This development marks a significant milestone in addressing the growing public health threat of tick-borne illnesses, potentially offering the first preventative vaccine for the disease in over two decades.
This page surfaces every story mentioning VLA15 across our biotech coverage. We track each entity's appearance over time so readers can trace how the narrative evolves — which developments are isolated incidents, which build into longer arcs, and which reframe how operators in the space think about the entity. Story selection uses the same multi-source verification gate applied across the rest of our coverage.
Read our editorial methodology for how we identify, deduplicate, and score entity references. Our glossary defines the technical terms used across stories on this page, and our trends index contextualizes individual developments against the longer-running biotech beat. Cross-entity comparisons live on our compare view.
| What you see | What it tells you |
|---|---|
| Story count | Number of distinct stories where VLA15 was a primary or referenced actor. |
| Recency clustering | Whether mentions are concentrated in a recent window (a news cycle) or distributed (a sustained arc). |
| Sentiment distribution | Aggregate sentiment of the stories mentioning this entity, weighted by impact score. |
| Cross-niche links | When the same entity surfaces in our sibling networks, we link to those views to enrich context. |