Vietnam tests chat and text to boost flu shots for seniors
NCT ID NCT07508189
First seen Jun 25, 2026 · Last updated Sep 04, 2026 · Updated 5 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.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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1,237 people
The number who actually took part.
- Started
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Sep 2025
- Finished
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Sep 2026
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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66 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Residents living in selected wards/communes in Can Tho City for at least 6 months. * Aged above 65 years. * Mentally and physically capable of participating in interviews and receiving communication interventions. * Agree to participate in the study and provide informed consent. Exclusion Criteria: * Individuals with severe cognitive impairment or dementia. * Individuals with contraindications to influenza vaccination. * Planning to move out of the study area during the 12-month follow-up period.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Can Tho University of Medicine and Pharmacy
Can Tho, Can Tho City, 900000, Vietnam
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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