Related Experiment Video
Updated: Dec 1, 2025

The Mouse Forced Swim Test
Published on: January 29, 2012
Reduction in paediatric intensive care admissions during COVID-19 lockdown in Maryland, USA
Ana Lia Graciano1, Adnan T Bhutta1, Jason W Custer1
1Department of Pediatrics/Critical Care, University of Maryland School of Medicine, Baltimore, Maryland, USA.
Insights
COVID-19 lockdowns significantly reduced pediatric intensive care unit admissions, primarily due to fewer respiratory infections. This decline was likely influenced by reduced social contact, improved air quality, and pandemic-related hospital fears.
Area of Science:
- Pediatric critical care
- Public health policy
- Epidemiology
Background:
- COVID-19 pandemic prompted global public health interventions to curb transmission.
- Government measures, including lockdowns, were implemented worldwide to 'flatten the curve'.
- Maryland's government enacted specific public health measures in response to the pandemic.
Purpose of the Study:
- To analyze pediatric intensive care unit (PICU) admissions during the COVID-19 lockdown period.
- To compare PICU admission data during the lockdown with data from the preceding four years.
- To investigate the potential factors contributing to observed changes in PICU admissions.
Main Methods:
- Retrospective analysis of PICU admission data.
- Comparison of admission rates during the lockdown period with historical data (previous four years).
- Focus on respiratory infection admissions as a primary outcome.
Main Results:
- A notable decrease in overall PICU admissions was observed during the COVID-19 lockdown.
- The decline in admissions was predominantly driven by a reduction in respiratory infections.
- Potential contributing factors include reduced person-to-person contact, improved air quality, and public apprehension towards hospitals.
Conclusions:
- COVID-19 public health measures led to a significant reduction in pediatric intensive care admissions.
- The decrease in respiratory infections was a major factor in the observed decline.
- Multifactorial influences, including behavioral and environmental changes, likely contributed to the reduced PICU admissions.
Abstract:
As a public health measure during the COVID-19 pandemic, governments around the world instituted a variety of interventions to 'flatten the curve'. The government of Maryland instituted similar measures. We observed a striking decline in paediatric intensive care unit (PICU) admissions during that period, mostly due to a decease in respiratory infections. We believe this decline is multifactorial: less person-to-person contact, better air quality and perhaps 'fear' of going to a hospital during the pandemic. We report an analysis of our PICU admissions during the lockdown period and compared them with the same time period during the four previous years.

