EMBRACE (Evaluation of Maternal and Baby Outcome Registry After Chemoprophylactic Exposure)

Inclusion Criteria: Mother cohort 1. Able and willing to provide written informed consent to take part in the study 2. During participation in a parent protocol, has/had a known confirmed pregnancy, meeting at least one of the following sets of criteria in A or B: A. Two consecutive monthly study visits, at least 14 days apart, with positive pregnancy tests, in the absence of signs/symptoms of miscarriage or participant report of pregnancy termination. B. One or more of the following assessments: * Auscultation of fetal heart tones * Positive pregnancy test confirmed by clinic staff in the presence of clinically confirmed enlarged uterus * Positive pregnancy test confirmed by clinic staff in the presence of missed menses (no menses occurring at least 60 days from the first day of the last menses) by participant report (For amenorrheic or irregularly cycling women, two consecutive positive hCG tests (criterion A) or any of the other clinical signs of pregnancy included under the criteria B listing will be used to confirm MTN-016 eligibility). * Clinical assessment of fetal movement * Demonstration of pregnancy by ultrasound 3. Able and willing to provide adequate locator information, as defined in site SOPs Note: Participants do not have to be currently enrolled or engaged in follow-up in a parent protocol to participate in EMBRACE. Inclusion Criteria: Infant cohort 1. Has written informed consent provided by parent(s)/guardian to take part in the study in a manner consistent with local standards, site Institutional Review Board (IRB) guidance and the US Code of Federal Regulations (CFR) 2. Born to EMBRACE participant mother from pregnancy concurrent with participation in parent study Exclusion Criteria: Mother cohort 1. Has any condition that in the opinion of the investigator or designee, would complicate interpretation of study outcome data, make participation in the study unsafe, or otherwise interfere with achieving the study objectives 2. Pregnancy outcome occurred greater than one year ago Exclusion Criteria: Infant cohort 1. Has any condition that, in the opinion of the investigator or designee, would complicate interpretation of study outcome data, make participation in the study unsafe, or otherwise interfere with achieving the study objectives 2. Has reached 1 year birth date