The Vaccination Informed Consent Ontology (VICO) is a community-driven ontology in the domain of vaccination/immunization informed consent. It extends the Informed Consent Ontology and integrates related OBO foundry ontologies, such as the Vaccine Ontology, with a focus on vaccination screening questionnaires in the vaccination informed consent domain. VICO could support a platform for vaccination informed consent data standardization, data integration, and data queries.