Valneva SE and Pfizer Inc Announced More Positive Trial Results of VLA15 for Lyme Disease What is Lyme Disease? What is the vaccine? What is the importance of the vaccine and the company that created it?    Lyme disease is an infection caused by Borrelia burgdorferi bacteria transmitted to humans by infected Ixodes ticks. Lyme disease is considered the most common vector- borne illness in the Northern Hemisphere. The U.S. …