%0 Case Reports %T Fulminant septic shock due to community-acquired pneumonia caused by Legionella pneumophila SG1 Olda OLDA ST1. Case report. %A de Miguel-Balsa E %A Jaimez Navarro E %A Cascajero A %A González-Camacho F %A González-Rubio JM %J J Infect Public Health %V 17 %N 6 %D 2024 Jun 25 %M 38678725 %F 7.537 %R 10.1016/j.jiph.2024.04.019 %X Legionellers' desease accounts for 1-8 % of cases of severe community-acquired pneumonia (CAP). Legionella spp. Is the causative organism that can result in respiratory failure, multi-organ dysfunction, sepsis, and death. Therefore, rapid diagnosis and efficient treatment are crucial. We report the clinical and microbiology study of a patient with community-acquired pneumonia caused by Legionella pneumophila, with fatal outcome. After death, the strain causing the infection was identified as Legionella pneumophila serogroup 1, Olda OLDA phenotype and sequence-type 1. This is the first reported case of septic shock and death associated with an isolate of these characteristics.