ABSTRACT
Background: SARS-CoV-2 has emerged as a novel pathogen of community-acquired pneumonia (CAP). Aims and objectives: We aimed to compare characteristics, clinical outcomes and pneumococcal identification in patients with COVID-19 vs non-COVID-19 CAP. Method(s): EGNATIA is an ongoing, prospective study of adults >=19yo hospitalized with clinical and radiographicallyconfirmed CAP in Greece. The primary objective is to estimate the proportion of CAP due to pneumococcal serotypes included in 13-valent pneumococcal conjugate vaccine (PCV13). Pneumococcus was identified using serotype-specific urinary antigen detection assays (UAD 1/2), BinaxNow and conventional cultures. Testing for SARS-CoV-2 was performed as per national guidelines. Result(s): We compared 202 patients with COVID-19 pneumonia during Apr2020-Mar2021 vs 1033 patients with nonCOVID-19 CAP during Nov2017-Oct2020. Patients with COVID-19 were younger (median age 68.8 vs 75.8 years) and had fewer comorbidities (67.8% with >=1 underlying condition vs 79.2%) than non-COVID-19 patients. Patients with COVID-19 less frequently reported past pneumonia episodes (0.5% vs 7.7%) but were more frequently nursing home residents (13.9% vs 6%). Patients with COVID-19 had less severe pneumonia presentation (CURB 65 3-5 6.4% vs 30.5%;PSI IV-V 41.1% vs 55.2%) but required mechanical ventilation more frequently (7.4% vs 1.9%) and had a longer hospital stay (mean 17.4 vs 9.6 days). In-hospital mortality was similar between the 2 groups (7.9% in COVID-19 vs 8.9% in non-COVID-19). Pneumococcus was identified less frequently in patients with COVID-19 vs non-COVID-19 CAP (4% vs 11.1%). Conclusion(s): Significant differences were identified in patients with COVID-19 vs non-COVID-19 CAP.