# Patient Portal Flu Vaccine Reminders_RCT 5 (LADHS)

> **NCT05535777** · NA · COMPLETED · sponsor: **University of California, Los Angeles** · enrollment: 246295 (actual)

## Conditions studied

- Influenza
- Respiratory Tract Infections

## Interventions

- **BEHAVIORAL:** Enhanced texts with Callback by a Person
- **BEHAVIORAL:** Enhanced Bidirectional Texts

## Key facts

- **NCT ID:** NCT05535777
- **Lead sponsor:** University of California, Los Angeles
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2022-09-13
- **Primary completion:** 2023-03-31
- **Final completion:** 2023-03-31
- **Target enrollment:** 246295 (ACTUAL)
- **Last updated:** 2025-04-11

## Collaborators

- [object Object]
- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05535777

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05535777, "Patient Portal Flu Vaccine Reminders_RCT 5 (LADHS)". Retrieved via AI Analytics 2026-07-10 from https://api.ai-analytics.org/clinical/NCT05535777. Licensed CC0.

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