RESUMEN
Background:Omicron (B.1.1.529) is a variant of COVID-19 which is first reported from Gauteng Province, South Africa in November 2021. This variant was considered the fifth variant of concern (VOC) by the world health organization (WHO) due to its much faster transmission but with milder clinical manifestations than other COVID-19 variants.Methods:This retrospective cross-sectional descriptive study was conducted in Sanglah general hospital, Denpasar, Bali in March 2022. Subjects of this study were all patients who were diagnosed with probable COVID-19 Omicron by having a positive S-gene target failure (SGTF) of a reverse transcriptase polymerase chain reaction (RT-PCR) test in Sanglah general hospital from January to February 2022. All subjects must age 18 years oldor older. Data on patient characteristics and clinical manifestations were obtained from medical record data and analyzed using statistical package for service solution (SPSS) for windows version 25.Results:A total of 79 probable COVID-19 Omicron patients were analyzed in this study. Most of them were elderly who age more than 65 years old (30.4%), male (50.6%), and work as an entrepreneur (24.1%). The majority of probable COVID-19 Omicron patients were symptomatic (89.9%) with the most common clinical manifestation found was cough (54.9%). Other clinical manifestations found were shortness of breath (50.7%), fever (38.0%), fatigue (21.1%), runny nose (11.3%), sore throat (8.5%), nausea and vomit (2.8%), headache (1.4%), diarrhea (1.4%), and anosmia (1.4%).Conclusions:The clinical manifestations of probable COVID-19 Omicron patients vary but most of them were classified as mild symptoms