Improving Pediatric COVID-19 Vaccine Uptake Using an mHealth Tool

Parent/Caregiver Inclusion Criteria: * Age of majority, as defined by the state of residency * Access to a mobile device that can store and run the study app for 24 weeks. Devices that can run the app include mobile phones and tablets running Android or iOS operating systems * Able to speak and read in English or Spanish * Be a parent/caregiver with primary medical decision-making and legal authority to consent to vaccination decisions for at least one child who meets the child inclusion criteria Child Inclusion Criteria: * Age 6 months to less than age of majority, as defined by the child's state of residence * Has not received any doses of COVID-19 vaccine based on parent/caregiver report * Eligible to receive COVID-19 vaccine * Patient at a participating clinic Parent/Caregiver Exclusion Criteria: * Has only a child or children with known contraindication to all COVID-19 vaccines * Has only a child or children whose other parent/caregiver is already a current or past participant in the study * Has a child or children enrolled in any other COVID-19 vaccine study of any kind * Past or present participation in a COVID-19 vaccine or behavioral trial * Has a cognitive impairment that limits their ability to engage with the app content and/or make medical decisions regarding vaccination, based on the site investigator's assessment and local human subjects research policies Child Exclusion Criteria: * Not a patient of a participating clinic * Prior receipt of least one dose of COVID-19 vaccine * Receiving or scheduled to receive COVID-19 vaccination at the time of parental consent * Known medical contraindication to all COVID-19 vaccines * Ineligible to receive COVID-19 vaccine * Prior or current participation in a COVID-19 vaccine study of any kind