Impact of Nonpharmaceutical Interventions During the COVID-19 Pandemic on Medically Attended Acute Respiratory

Eugene V Millar1,2, Stephen P Rossi3, Simon Pollett1,2

  • 1Infectious Disease Clinical Research Program, Department of Preventive Medicine and Biostatistics, Uniformed Services University, Bethesda, MD 20814, USA.

Military Medicine
|March 20, 2023
PubMed
Abstract

Insights

Nonpharmaceutical interventions (NPIs) significantly reduced medically attended acute respiratory infections (MAARI) during the U.S. Naval Academy's intensive Plebe Summer training program. This demonstrates the effectiveness of NPIs in controlling respiratory illness in high-risk environments.

Area of Science:

  • Public Health
  • Epidemiology
  • Infectious Disease Control

Background:

  • Medically attended acute respiratory infections (MAARI) typically increase during Plebe Summer at the U.S. Naval Academy.
  • The COVID-19 pandemic necessitated the implementation of extensive nonpharmaceutical interventions (NPIs) during the 2020 Plebe Summer training.

Approach:

  • MAARI counts from weeks 22-45 between 2012 and 2020 were retrospectively reviewed.
  • A comparative analysis was conducted between the pandemic year (2020) and the pre-pandemic period (2012-2019).

Key Points:

  • The pre-pandemic average annual MAARI cases from 2012-2019 were 1,642.
  • In 2020, MAARI cases significantly decreased to 443.
  • NPI implementation correlated with a substantial 77% reduction in MAARI cases.

Conclusions:

  • Routine NPI use was strongly associated with a significant reduction in MAARI during a high-risk military training period.
  • These findings highlight the efficacy of NPIs in mitigating respiratory infections in demanding training environments.
  • The study underscores the importance of public health interventions in safeguarding trainee health during intensive programs.

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