Clinical characteristics of the severe acute respiratory syndrome coronavirus 2 omicron variant compared with the delta variant: a retrospective case-control study of 318 outpatients from a single sight institute in Japan

• Published in: PeerJ (San Francisco, CA) Vol. 10; p. e13762
• Main Authors: Suzuki, Keiko, Ichikawa, Takaya, Suzuki, Satoshi, Tanino, Yoko, Kakinoki, Yasutaka
• Format: Journal Article
• Language: English
• Published: United States PeerJ. Ltd 02.08.2022; PeerJ, Inc; PeerJ Inc
• Subjects: Age; Aspartate; Aspartate aminotransferase; Bacterial pneumonia; Blood; Blood tests; Body mass index; C-reactive protein; Care and treatment; Case-Control Studies; Clinical characteristics; Comorbidity; Comparative analysis; Coronaviruses; COVID-19; COVID-19 - epidemiology; COVID-19 vaccines; Dehydrogenases; Demographics; Electronic medical records; Epidemiology; Ferritin; Health aspects; Hematology; Hospital patients; Hospitals, Urban; Humans; Infectious Diseases; Internal Medicine; Japan - epidemiology; L-Lactate dehydrogenase; Laboratories; Lactic acid; Leukocytes (neutrophilic); Lymphocytes; Medical examination; Medical records; Medical research; Medicine, Experimental; Neutrophils; Omicron; Outpatients; Oxygen therapy; Patients; Pneumonia; Retrospective Studies; Risk factors; SARS-CoV-2 - genetics; Severe acute respiratory syndrome; Severe acute respiratory syndrome coronavirus 2; Vaccination; Japan; COVID-19; Clinical characteristics; Outpatients; Omicron; Risk factors

Clinical characteristics, including laboratory parameters, of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant have been limited. This retrospective case-control study was conducted in a single hospital. Patients with coronavirus disease 2019 (COVID-19) who visited th...