Characteristics and incidence trends of adults hospitalized with community-acquired pneumonia in Portugal, pre-pandemic

• DOI: 10.1371/journal.pone.0322623
• Publication Date: 2025-05-16T20:06:33Z
• Authors: Joana Carneiro; Rita Teixeira; Andreia Leite; Maria Lahuerta; Julie Catusse; Mohammad Ali; Sílvia Lopes
• Keywords: Pandemic

Community-acquired pneumonia (CAP) is a major cause of hospitalization that leads to substantial morbidity, mortality, and costs. Evaluating CAP trends over time important understand patterns the impact public health interventions. This study aims describe characteristics in incidence adults hospitalized with Portugal between 2010 2018. In this study, we included data, prevalence comorbidities, population data. hospitalizations (≥18y) living mainland discharged from hospitals were identified using ICD-9-CM or ICD-10-CM codes. Based on previous studies, selected nine relevant comorbidities. We described frequency per sex, age group, comorbidity, year discharge. Trends explored Joinpoint regression. observed 470,545 falling into 2010–18 period. The majority males (54.8%) aged ≥75 years (65.3%). Most often recorded comorbidities congestive heart failure (26.4%), diabetes (25.5%), chronic pulmonary disease (19.2%). regression gradual decline rates for both sexes all groups. Of selected, seven showed progressive increase followed by subsequent (all except HIV/AIDS renal disease). Our findings offer valuable insights selecting priority groups interventions design strategies mitigate burden CAP.