An Experiment Comparing Public Reactions to the Labels "Community Immunity" Versus "Herd Immunity".

Not Applicable

Not yet recruiting

• Conditions: Attitudes

• Registration Number: NCT07102472
• Lead Sponsor: Laval University

Brief Summary

Participants are shown a scenario consisting of static images from a previous study ("herdimm") showing a visualization of how herd immunity works. Participants are randomized to see the text with the term "herd immunity" or "community immunity."

Detailed Description

Not available

Study Timeline

• Status Verified: 2025-07
• Study Start: 2025-07-22
• Study First Submitted: 2025-07-28
• Study First Submitted QC: 2025-07-28
• Last Update Submitted: 2025-07-28
• Study First Posted: 2025-08-03
• Last Update Posted: 2025-08-03
• Primary Completion: 2025-08-31
• Study Completion: 2025-08-31

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: All
• Target Recruitment: 350

Inclusion Criteria

• Able to use a computer
• Able to use the internet
• Able to read and respond to questions in English or French
• 18+ years old and living in Canada

Exclusion Criteria

• Unable to view images on a computer

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Orientation towards protection of others	Immediately after the intervention	A measure of the extent to which people believe that individual vaccination behavior is important to protect others. Question wording: "When a safe and effective vaccine exists that can prevent people from catching and passing on a contagious disease, it is important for people to get vaccinated to protect ..." Measured across two to three items (family, others in the community, people who are more vulnerable to disease) on a 7-point Likert-type scale (strongly disagree = 1, strongly agree = 7).