Construyendo resiliencia cognitiva a la desinformación sobre vacunas usando IA en Europa
Desarrollo de resiliencia cognitiva frente a la desinformación sobre vacunas mediante IA conversacional: evidencia de un ensayo aleatorizado multinacional europeo
This multi-country trial evaluates an AI chatbot designed to counter cognitive biases and inoculate parents against vaccine misinformation, embedded within a large survey across five European countries (n=5,000). Scaled from a 2026 single-country study, outcomes compare behavioural and attitudinal responses against standard-of-care materials (e.g., UNICEF infographics) to identify effective, scalable misinformation interventions.
Descripción general del estudio
Estado
Condiciones
Intervención / Tratamiento
Descripción detallada
The aim of this multi-country trial is to identify and quantify the effectiveness of inoculation strategies against vaccine-related misinformation. Building on a single-country study implemented in early 2026 [NCT07488962], the study evaluates an AI chatbot designed to counter cognitive biases, embedded within a larger survey to enable integrated assessment of engagement, behavioural responses, and system performance at scale.
The study will be conducted across five European countries-the United Kingdom, the Netherlands, Croatia, Latvia, and Slovakia-with a total sample of 5,000 parents or caregivers (n=1,000 per country). Participants will complete a structured survey assessing childhood vaccination behaviours, vaccine confidence, trust in information sources, exposure to misinformation, and relevant psychological and sociodemographic factors.
Participants will be randomly assigned to either the intervention or control arm. The intervention arm will receive the AI-based chatbot, while the control arm will receive standard-of-care materials-such as national or international health institute communications (e.g., UNICEF infographics)-that address the same misinformation messages, enabling a direct and rigorous comparison.
The primary outcome is parents' ability to correctly distinguish true from false childhood vaccine statements. Quantitative analyses will include pooled and country-specific models to identify determinants of vaccine confidence and estimate intervention effects. Findings will clarify drivers of declining vaccine confidence and assess whether a scalable AI-based chatbot can reduce vulnerability to misinformation and support informed vaccination decisions.
Tipo de estudio
Inscripción (Estimado)
Fase
- No aplica
Contactos y Ubicaciones
Estudio Contacto
- Nombre: Leesa Lin, PhD
- Número de teléfono: +44 (0)20 7636 8636
- Correo electrónico: Leesa.Lin@lshtm.ac.uk
Copia de seguridad de contactos de estudio
- Nombre: Kana Kobayashi, MSPH
- Correo electrónico: Kana.Kobayashi@lshtm.ac.uk
Ubicaciones de estudio
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London, Reino Unido
- Reclutamiento
- London School of Hygiene and Tropical Medicine
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Contacto:
- Leesa Lin
- Número de teléfono: +44 20 7927 2555
- Correo electrónico: Leesa.Lin@lshtm.ac.uk
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Descripción
Inclusion Criteria:
- Parents or caregivers with children under 18 years old in the five target countries (UK, Netherlands, Croatia, Latvia, and Slovakia); and
- Those who have regular access to a digital device and the internet
Exclusion Criteria:
- Participants who do not meet the inclusion criteria.
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Investigación de servicios de salud
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Doble
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
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Experimental: AI-driven chatbot
An interactive, web-based, AI-driven chatbot intervention designed to counter vaccine misinformation. It can be accessed via a personal computer, tablet, or mobile device through a web- browser link. |
A tailored AI-driven chatbot designed to counter vaccine misinformation. |
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Comparador activo: Social media infographic
A UNICEF social media infographic with three "myth vs. fact" statements on vaccination that correspond to the same misinformation tactics explained by the MindShield chatbot. |
A UNICEF social media infographic with three "myth vs. fact" statements on vaccination. |
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
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Parental susceptibility to misinformation about childhood vaccination
Periodo de tiempo: Through study completion, an average of 20-30 minutes
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The primary outcome of this study will assess parental susceptibility to misinformation about childhood vaccination, defined as parents' ability to accurately distinguish between true and false vaccine-related information. This will be measured using ten statements on childhood vaccines, including four true and six false, rumour-related statements. Two of the rumour-related statements correspond to each of the three misinformation tactics introduced by the chatbot and the UNICEF infographic. This measure reflects parents' ability to identify misinformation containing manipulation tactics they were inoculated against and to distinguish true from false information regarding childhood vaccination. Responses will be recorded as "True", "False", or "Don't know". A composite misinformation susceptibility score will be calculated based on the number of correct responses, with higher scores indicating greater ability to identify vaccine misinformation accurately. |
Through study completion, an average of 20-30 minutes
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Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
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Vaccine confidence
Periodo de tiempo: Through study completion, an average of 20-30 minutes
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Vaccine confidence will be assessed using three statements addressing whether childhood vaccines are important, safe, and effective. Responses will range from "Strongly agree" to "Strongly disagree", with a "Don't know" option. A composite score ranging from 0 to 100 will be calculated, with higher scores indicating greater vaccine confidence. |
Through study completion, an average of 20-30 minutes
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Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Leesa Lin, PhD, London School of Hygiene and Tropical Medicine
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio (Actual)
Finalización primaria (Estimado)
Finalización del estudio (Estimado)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Actual)
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Otros números de identificación del estudio
- LSHTM32877
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
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