NCT07102485

Brief Summary

A comparison of how people respond to the terms "natural immunity" versus "disease-induced immunity".

Trial Health

35
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
350

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Jul 2025

Shorter than P25 for not_applicable

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

July 24, 2025

Completed
4 days until next milestone

First Submitted

Initial submission to the registry

July 28, 2025

Completed
6 days until next milestone

First Posted

Study publicly available on registry

August 3, 2025

Completed
28 days until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 31, 2025

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

August 31, 2025

Completed
Last Updated

August 3, 2025

Status Verified

July 1, 2025

Enrollment Period

1 month

First QC Date

July 28, 2025

Last Update Submit

July 28, 2025

Conditions

Attitudes

Outcome Measures

Primary Outcomes (1)

  • Opinion about forms of immunity

    Participants indicate their opinion in response to question, "In your opinion, which is better: vaccine-induced immunity or natural/disease-induced immunity?" on a visual analog scale (slider) from 0-100, with 0 = "vaccine-induced immunity is much better," 50 = "both forms of immunity are equally good," 100 = "natural/disease-induced immunity is much better."

    Immediately after intervention

Study Arms (2)

natural immunity

PLACEBO COMPARATOR

Label used is standard term "natural immunity"

Other: natural immunity

disease-induced immunity

EXPERIMENTAL

Label used is "disease-induced immunity"

Other: disease-induced immunity

Interventions

disease-induced immunityOTHER

Using a different label for natural immunity, specifically, "disease-induced immunity"

disease-induced immunity
natural immunityOTHER

Using standard label "natural immunity"

natural immunity

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

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

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

Behavior

Interventions

Immunity, Innate

Intervention Hierarchy (Ancestors)

ImmunityImmune System Phenomena

Central Study Contacts

Holly Witteman

CONTACT

418-656-2131holly.witteman@fmed.ulaval.ca

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
HEALTH SERVICES RESEARCH
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 28, 2025

First Posted

August 3, 2025

Study Start

July 24, 2025

Primary Completion

August 31, 2025

Study Completion

August 31, 2025

Last Updated

August 3, 2025

Record last verified: 2025-07

Data Sharing

IPD Sharing
Will share

Anonymized data will be shared on Borealis, Laval University's data repository.

Shared Documents
STUDY PROTOCOL, ICF, ANALYTIC CODE
Time Frame
IPD and supporting information will be available when the report is complete and for an indefinite period of time.
Access Criteria
Anyone with internet access will be able to access public-facing data. Some data may require Borealis registration.
More information