Clinical Research Directory

Inclusion Criteria: * Age 50+ * Has not received any doses of the Shingrix vaccine according to the Geisinger EHR * Has a non-acute in-person Geisinger primary care appointment in a department that stocks Shingrix scheduled with enough time to be randomized Exclusion Criteria: * Cannot be contacted via the communication modality being used in the study (e.g., patient portal, SMS), e.g., due to insufficient/missing contact information in the EHR or because they opted out * Patient does not have an approved insurance on file for Shingrix outreach for their appointment type or department * Appointment type or department not approved for outreach by Geisinger leadership at the time of outreach * While a separate flu vaccination nudge campaign is running (approximately from September through December, 2024), patients will be excluded if they have not received a flu shot in the 2024-25 flu season according to the EHR. Such patients will be eligible for inclusion again as soon as the flu vaccination campaign ends.