Incidence of Community-Acquired Pneumonia Among Trainees of the 35th Police Cohort at Delta Hospital Center, October 5 to January 22, 2026: A Retrospective Cohort Study

Abstract

Introduction: Community-acquired pneumonia remains a major cause of acute lower respiratory tract infection worldwide. Although its incidence is well documented in the general population, data remain limited in specific settings such as intensive training environments and collective living conditions, particularly among police trainees. Epidemiological information regarding community-acquired pneumonia in this population is scarce. The primary objective of this study was to estimate the cumulative incidence of community-acquired pneumonia among trainees of the 35th cohort of the Haitian National Police referred to Delta Hospital Center, their designated medical referral facility, between October 5, 2025 and January 22, 2026.

Methods: We conducted a retrospective observational cohort study based on a systematic review of medical records of police trainees managed at Delta Hospital Center during the study period. The study population included 877 trainees, among whom 74 medical consultation records were reviewed. Data were extracted and analyzed using Microsoft Excel and SPSS version 20. Cumulative incidence rates and their 95% confidence intervals were calculated to provide precise estimates.

Results: A total of 877 police trainees were included, comprising 156 women (17.8%) and 721 men (82.2%). During the study period, 74 medical consultations were recorded (8.4% of the total population). Among these, 28 cases of community-acquired pneumonia were diagnosed, representing 37.8% of consultation diagnoses and corresponding to an overall cumulative incidence of 3.2%. The cumulative incidence was identical in men and women (3.2%), with no statistically significant difference in risk observed between sexes.

Conclusion: Community-acquired pneumonia represents a frequent reason for medical consultation among police trainees in intensive training settings, with a notable incidence despite the short duration of observation and the young, presumably healthy population. The absence of sex-related differences further underscores the need for environmental, organizational, preventive, and surveillance measures adapted to collective training environments.