Related Experiment Video
Updated: Sep 20, 2025

Swabbing the Urban Environment - A Pipeline for Sampling and Detection of SARS-CoV-2 From Environmental Reservoirs
Published on: April 9, 2021
Racial/Ethnic Inequity in Transit-Based Spatial Accessibility to COVID-19 Vaccination Sites
Dong Liu1,2, Mei-Po Kwan3,4, Zihan Kan5
1Human Environments Analysis Laboratory, The University of Western Ontario, Social Sciences Centre, 1151 Richmond Street, London, ON, N6A 5C2, Canada.
Abstract:
With the ongoing spread of COVID-19, vaccination stands as an effective measure to control and mitigate the impact of the disease. However, due to the unequal distribution of COVID-19 vaccination sites, people can have different levels of spatial accessibility to COVID-19 vaccination. This study adopts an improved gravity-based model to measure the racial/ethnic inequity in transit-based spatial accessibility to COVID-19 vaccination sites in the Chicago Metropolitan Area. The results show that Black-majority and Hispanic-majority neighborhoods have significantly lower transit-based spatial accessibility to COVID-19 vaccination sites compared to White-majority neighborhoods. This research concludes that minority-dominated inner-city neighborhoods, despite better public transit coverage, are still disadvantaged in terms of transit-based spatial accessibility to COVID-19 vaccination sites. This is probably due to their higher population densities, which increase the competition for the limited supply of COVID-19 vaccination sites within each catchment area.
More Related Videos
Related Concept Videos
Bias in Epidemiological Studies
Stereotypes, Prejudice, and Discrimination
Types of Skewness
For instance, in the middle of a pandemic, the geographical distribution of vaccine coverage may be positively skewed towards populations in the global north countries. However,...
Surveys
Vaccinations
Contingency Table

