Vietnam tests chat and text to boost flu shots for seniors

NCT ID NCT07508189

Ongoing Prevention Sponsor: Can Tho University of Medicine and Pharmacy Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jul 07, 2026 · Updated 4 times

Summary

This study tests whether a community-based communication program can increase flu vaccination rates among people over 65 in Can Tho City, Vietnam. The program includes direct counseling, weekly health tips via the Zalo app, and printed leaflets. Researchers will compare vaccination rates between groups that get the program and those that don't over 12 months.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: Multi-component Health Communication Package (counseling, Zalo messages, leaflets)
What this could lead to: If it works, this could show a simple way to get more elderly people vaccinated against the flu, reducing illness and hospital visits.
What could go wrong: This is a behavioral study, not a medical treatment. Success depends on people actually getting the vaccine, and results may not apply outside Vietnam.

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Conditions

The condition(s) this trial relates to.

influenza prevention target

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

HEALTH COMMUNICATION INFLUENZA VACCINATION COVERAGE

Contacts and locations

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Locations

Can Tho University of Medicine and Pharmacy

Can Tho, Can Tho City, 900000, Vietnam

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