Related Experiment Video
Updated: Jul 12, 2025

Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street
Published on: January 20, 2023
COVID Vaccine Hesitancy and Long-Term Traffic Risks.
Donald A Redelmeier1, Jonathan Wang2, Samantha S M Drover3
1Evaluative Clinical Sciences, Sunnybrook Research Institute, Toronto, Ont, Canada; Department of Medicine, University of Toronto, Ont, Canada; Institute for Clinical Evaluative Sciences, Toronto, Ont, Canada; Division of General Internal Medicine, Sunnybrook Health Sciences Centre, Toronto, Ont, Canada; Center for Leading Injury Prevention Practice Education & Research, Sunnybrook Research Institute, Toronto, Ont, Canada.
COVID vaccine hesitancy is linked to a 58% higher risk of traffic crash injuries. Understanding these risks may encourage vaccination for personal safety and public health.
Area of Science:
- Public Health
- Epidemiology
- Traffic Safety
Background:
- COVID vaccine hesitancy presents a conflict between individual choices and public health recommendations.
- This study investigates the potential association between COVID vaccine hesitancy and long-term traffic crash risks.
Purpose of the Study:
- To determine if COVID vaccine hesitancy correlates with an increased risk of traffic crashes.
- To quantify the magnitude of this association and identify associated factors.
Main Methods:
- A population-based longitudinal cohort study analyzed data from electronic medical records.
- COVID vaccination status was linked to emergency medical records for traffic crashes over one year.
- Artificial Intelligence techniques were employed for risk validation.
Main Results:
- Over 11.5 million individuals were analyzed; 1.2 million were unvaccinated against COVID.
- Unvaccinated individuals had a 58% higher risk of traffic crash injuries (6983 vs 4438 per million).
- Increased risks were observed across subgroups, for single-vehicle crashes, fatal outcomes, and persisted after adjustments.
Conclusions:
- COVID vaccine hesitancy is significantly associated with elevated long-term traffic crash risks.
- Raising awareness of these traffic risks could motivate individuals to adopt protective behaviors and consider vaccination.
Related Concept Videos
Vaccinations
The Availability Heuristic
Immunological Memory
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
Desensitization and Tachyphylaxis
Social Traps
Pharmacovigilance
This process, termed pharmacovigilance, aims to detect, evaluate, and minimize harmful effects related to medication use. The data collection for pharmacovigilance depends on spontaneous reporting systems, where healthcare professionals or patients voluntarily report suspected ADRs.
In some cases, there...

