RecruitingPhase 2Biological interventionA Study to Evaluate the Safety, Reactogenicity, and Immunogenicity of mRNA-1982 to Prevent Lyme Disease in Healthy Participants (18 to 70 Years of Age)This clinical study will evaluate the safety, reactogenicity, and immunogenicity of monovalent mRNA-1982, a messenger ribonucleic acid (mRNA) vaccine to prevent Lyme disease in healthy adults aged 18 to 70 years old.