Chatbot-delivered Theory-based Online Intervention in Increasing Seasonal Influenza Vaccination Uptake Among Children Aged 3-6 Years
Starting soon · Not applicable
Conditions studied: Behavior Change
In brief
This randomized controlled trial will compare the efficacy of a Chatbot-delivered stage-of-change-tailored online intervention versus a Chatbot-delivered non-stage-of-change-tailored online intervention for mothers in increasing seasonal influenza vaccination uptake of their children aged 3-6 years. Mothers of children aged 3-6 years will be randomized evenly into either the intervention or the control group. In the intervention group, the Chatbot will assess mothers' stage of change regarding their children's seasonal influenza vaccination uptake and deliver SOC-tailored interventions through WhatsApp every two weeks for four times. In the control group, the Chatbot will provide a standard and non-stage-of-change-tailored intervention every two weeks for four times. All participants will complete three telephone surveys at baseline (T0), after completion of the intervention (T1) and three months after T1 (T2).
Key facts
- Study ID
- NCT07687719
- Run by
- Chinese University of Hong Kong
- People needed
- 426
- Starts
- 2026-08-01
- Expected to finish
- 2027-10-31
- Last updated by the study team
- 2026-07-07
Who can join
Age: 18 and older. Sex: female. Healthy volunteers: accepted.
You may qualify if…
- Mothers aged ≥18 years with at least one child aged 3-6 years studying in kindergarten in Hong Kong
- Cantonese speaking
- Having smartphone with internet access
- Already having WhatsApp on the smartphone
You may not qualify if…
- Blindness or deafness
- The index child has known medical contraindications for seasonal influenza vaccination
Full record on ClinicalTrials.gov
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