International Cohort Study of Children Born to Women Infected With Zika Virus During Pregnancy

Inclusion Criteria: ZIKV- Exposed Inclusion Criteria: * Parent(s)/legal guardian(s) provided written permission for his or her child to participate. * Participant and/or participant's biological mother previously enrolled in the ZIP study or other ZIKV cohort study approved by the sponsors. * Participant's biological mother has laboratory documentation of positive ZIKV RNA test results during pregnancy through delivery delivery or the participant has laboratory documentation of ZIKV RNA or serology positive/presumptive positive/equivocal ZIKV test within 5 days of birth according to the ZIKV-exposed definitions included in the ZIP 2.0 inclusion criteria. * Minimum 74 weeks of age (approximately 17months) of age at enrollment ZIKV-Unexposed Inclusion Criteria: * Parent(s)/legal guardian(s) provided written permission for his or her child to participate. * Previously enrolled in the ZIP study and identified as matching the same birth sex and followed at the same study site as an enrolled ZIKV-exposed participant. * Laboratory documentation that the participant's biological mother has negative ZIKV RNA test results and no positive ZIKV RNA test results at any time during her pregnancy through delivery. * Participant did not test ZIKV RNA and/or serology positive presumptive positive or equivocal at any time prior to ZIP 2.0 enrollment, if testing was performed prior to enrollment. * Minimum 74 weeks of age (approximately 17months) of age at enrollment Exclusion Criteria: Bo…