# Mail Outreach To Increase Vaccination Acceptance Through Engagement

> **NCT02243774** · NA · COMPLETED · sponsor: **Brigham and Women's Hospital** · enrollment: 228000 (actual)

## Conditions studied

- Influenza, Human
- Influenza
- Human Flu

## Interventions

- **BEHAVIORAL:** Core letter signed by Surgeon General
- **BEHAVIORAL:** Core letter signed by the Director of the National Vaccine Program
- **BEHAVIORAL:** Core letter signed by Surgeon General + implementation prompt
- **BEHAVIORAL:** Core letter signed by SG + enhanced implementation prompt

## Key facts

- **NCT ID:** NCT02243774
- **Lead sponsor:** Brigham and Women's Hospital
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2014-09
- **Primary completion:** 2015-01
- **Final completion:** 2015-09
- **Target enrollment:** 228000 (ACTUAL)
- **Last updated:** 2017-07-12

## Collaborators

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## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT02243774

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT02243774, "Mail Outreach To Increase Vaccination Acceptance Through Engagement". Retrieved via AI Analytics 2026-06-01 from https://api.ai-analytics.org/clinical/NCT02243774. Licensed CC0.

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