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Communication Intervention to Improve Influenza Vaccination Rates Among Elderly in Can Tho
Sponsor: Can Tho University of Medicine and Pharmacy
Summary
This study evaluates the effectiveness of a multi-component community-based communication intervention to increase influenza vaccination rates among adults aged above 65 years in Can Tho City, Vietnam. Using a cluster randomised controlled trial design with stratified lottery randomisation, four study sites were selected from eight sites surveyed in a prior study: O Mon Ward and Truong Thanh Commune (intervention); Phuoc Thoi Ward and Truong Xuan Commune (control). The intervention includes community health education sessions, healthcare worker training, household visits, health communication banners, and Zalo-based vaccination reminders, delivered over 12 months (September 2025 to September 2026). Effectiveness is assessed by comparing pre- and post-intervention outcomes using Difference-in-Differences (DID) analysis.
Official title: Effectiveness of Community-Based Communication Interventions to Improve Influenza Vaccination Rates Among the Elderly in Vietnam: A Cluster Randomized Controlled Trial
Key Details
Gender
All
Age Range
66 Years - Any
Study Type
INTERVENTIONAL
Enrollment
1200
Start Date
2025-09-01
Completion Date
2026-12
Last Updated
2026-07-06
Healthy Volunteers
Yes
Interventions
Multi-component Health Communication Package
A 12-month cluster-level communication intervention (Sep 2025-Sep 2026) delivered in two phases to all adults aged \>65 years in intervention clusters: Phase 1 (Sep 2025): (1) Two community health education sessions/site with influenza leaflets for older adults and family members; (2) HCW capacity-building workshop/site (O Mon: n=30; Truong Thanh: n=20); (3) Thirty household visits/site by community health volunteers. Phase 2 (ongoing): (4) Health communication banners at health stations and community centres; (5) HCW point-of-care vaccination counselling at all clinical contacts; (6) Zalo-based weekly educational content and vaccination reminders (Dec 2025-Jan 2026).
Locations (1)
Can Tho University of Medicine and Pharmacy
Can Tho, Can Tho City, Vietnam