Conversion Point: Valid Form Fill Age Range: 16-40 Gender: Women Participants who qualify for the study will receive trial-related procedures and study medication at no cost and may be compensated up to $1,842 for time and travel. GEO: US Only Traffic Allowed: Email, Social, Banner, Native, Push, SEO, Search, Brand Bidding No Incent No Co-Reg No Survey No SMS No Adult Send ad creatives and LP to AM for approval Forbidden traffic types/false Advertisements Will NOT Be Paid For Fake/false celebrity ads/endorsements are strictly prohibited Qualifications: - You (or your child) cannot have been diagnosed with a confirmed or suspected immunosuppressive or immunodeficient conditions – these include B cell deficiency, T cell deficiency, and HIV - Cannot have been diagnosed with an autoimmune disorder, including: o Crohn’s disease o Ulcerative colitis o Lupus o Type 1 Diabetes o Multiple Sclerosis o Rheumatoid Arthritis o Psoriasis - You (or your child) cannot have used an oral immunosuppressant such as prednisone for 14 consecutive days or longer in the last six months - Cannot have received any blood products in last three months - This study requires all participants to use a highly effective form of birth control for the first 9 months of study participation. Would you (would your child) be willing to avoid pregnancy by using either hormonal contraception or sexual abstinence? Study Description" The purpose of this clinical study is to see how effective an investigational vaccine is at preventing Cytomegalovirus (CMV) infection. You (your child) may be asked to attend 1 screening visit to determine if you (they) are eligible to enroll in the study. If enrolled, you (your child) will receive either the investigational vaccine being tested in this study or a placebo as 3 doses over 6 months. Your (your child’s) total participation will last approximately 2.5 years and you (they) will be asked to attend 13 doctor’s visits and at least 5 phone visits. During these visits, you (they) will complete various diagnostic and laboratory tests. The doctor’s office conducting the study will be able to provide you with more information about the study requirements. Participants who qualify for the study will receive trial-related procedures and study medication at no cost and may be compensated up to $1,842 for time and travel.