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Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Int+J+Infect+Dis 2020 ; 99 (ä): 266-268 Nephropedia Template TP
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Clinical Characteristics of Asymptomatic Patients with COVID-19: A Nationwide Cohort Study in South Korea #MMPMID32771632
Jung CY; Park H; Kim DW; Choi YJ; Kim SW; Chang TI
Int J Infect Dis 2020[Oct]; 99 (ä): 266-268 PMID32771632show ga
OBJECTIVES: To delineate clinical characteristics of asymptomatic and symptomatic patients confirmed with COVID-19 in South Korea. METHODS: Data were obtained from the Korean National Health Insurance Service database linked to the Korea Centers for Disease Control and Prevention data. RESULTS: Among 10,237 patients (mean [SD] age, 45.0 [19.8] years; 60.1% female) who met the eligibility criteria for the study, 6,350 (62.0%) patients were asymptomatic, and 3,887(38.0%) patients were symptomatic. The mean and median age were similar between asymptomatic and symptomatic patients. Notably, we observed a U-shaped association between age group and the proportion of asymptomatic patients, with the nadir at 57.3% in the 40-49 age group. This U-shaped distribution was largely similar between men and women. The overall prevalence of asymptomatic individuals was higher, regardless of sex, residential area, income levels, and comorbid conditions. CONCLUSIONS: In this national cohort of over 10,000 patients with COVID-19, more than 60% of all cases in South Korea reported no symptoms at the time of diagnosis. Expanding criteria for contact tracing and testing to capture potential transmission before symptom onset should be urgently considered to inform control strategies for COVID-19.