Related Experiment Video
Updated: Jan 11, 2026
Measuring Carbon Content in Airway Macrophages Exposed to Carbon-Containing Particulate Matters
Published on: July 12, 2024
Respiratory Emergencies in Pediatrics: Associations in Redlining, Air Quality and Traffic Regulation The REPARATION
David Hibbert1,2, Tom Beucler3, Karyssa N Domingo4
1Department of Internal Medicine, UC San Diego, 200 W Arbor Dr, San Diego, CA, 92103, USA. dhibbert132@gmail.com.
Insights
Cleaner air during COVID-19 lockdowns reduced pediatric respiratory emergency visits, particularly in vulnerable, historically redlined neighborhoods. This highlights the impact of structural inequities on child respiratory health.
Area of Science:
- Environmental Health
- Pediatric Respiratory Health
- Health Equity
Background:
- COVID-19 lockdowns temporarily reduced air pollution, creating a natural experiment.
- Historical redlining created lasting environmental and health inequities in marginalized communities.
Purpose of the Study:
- To assess if socially vulnerable or historically redlined neighborhoods saw greater reductions in pediatric respiratory emergency department visits during the COVID-19 lockdown.
Main Methods:
- Retrospective study of 101,733 pediatric emergency department encounters (2016-2020).
- Compared weekly respiratory visit rates during lockdown weeks 10-15 of 2020 to 2016-2019 baseline.
- Used CDC Social Vulnerability Index (SVI) and historical Home Owners' Loan Corporation (HOLC) grades, linked spatially to ED data.
Main Results:
- Respiratory emergency department visits decreased across all ZIP codes during lockdown.
- Greatest reductions were observed in areas with high Minority Status and Language SVI scores.
- Historically redlined (HOLC grade D) neighborhoods, often overlapping with high-SVI areas, showed significantly greater vulnerability.
Conclusions:
- Reduced air pollution during COVID-19 lockdowns correlated with fewer pediatric respiratory emergencies.
- Findings underscore how structural inequities continue to impact child respiratory health.
- Emphasizes the need for equitable pollution-reduction policies to address health disparities.
Background:
The COVID-19 stay-at-home order created a temporary period of reduced air pollution in San Diego County, offering a natural experiment to assess how cleaner air affects pediatric respiratory health. Historical housing discrimination through redlining has left lasting environmental and health inequities, particularly for non-White and low-income communities.
Objective:
To evaluate whether children in socially vulnerable or historically redlined neighborhoods experienced greater reductions in respiratory emergency department (ED) visits during the COVID-19 lockdown.
Methods:
We conducted a retrospective study of 101,733 pediatric ED encounters (2016-2020) at Rady Children's Hospital. Weekly respiratory visits encounter rates during weeks 10-15 of 2020 were compared to the 2016-2019 baseline. ZIP code-level social vulnerability was measured using the CDC Social Vulnerability Index (SVI), and historical redlining grades from the Home Owners' Loan Corporation (HOLC) were spatially linked to the ED data. Correlations and Welch's t-tests assessed associations between respiratory visit changes, SVI quintiles, and HOLC grades.
Results:
Respiratory ED visits declined by 0.25-1.4 visits per week across ZIP codes during the lockdown, with the greatest reductions observed in areas with high Minority Status and Language SVI scores (p 0.001). Historically redlined (HOLC grade D) neighborhoods overlapped with high-SVI areas and showed significantly greater vulnerability (p 0.001).
Conclusions:
Cleaner air during the COVID-19 lockdown corresponded with fewer pediatric respiratory emergencies, especially in historically marginalized neighborhoods. These findings highlight how structural inequities continue to influence respiratory health and emphasize the need for equitable pollution-reduction policies.
More Related Videos
Related Concept Videos
01:17Pulmonary Cycle: Exhalation
01:21Acute Respiratory Failure-II
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
01:23Acute Respiratory Failure-IV
01:30Respiratory System Abnormal Finding I: Inspection and Percussion
Inspection Findings
During an inspection, several findings may suggest the presence of respiratory distress or disease. Pursed-lip breathing, where exhalation is slowed by...
01:29Asthma-I: Introduction
01:19Factors Affecting Pulmonary Ventilation
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...