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Deprecated: Implicit conversion from float 251.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Int+J+Infect+Dis 2021 ; 104 (ä): 742-745 Nephropedia Template TP
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Comparison of the second and third waves of the COVID-19 pandemic in South Korea: Importance of early public health intervention #MMPMID33556610
Seong H; Hyun HJ; Yun JG; Noh JY; Cheong HJ; Kim WJ; Song JY
Int J Infect Dis 2021[Mar]; 104 (ä): 742-745 PMID33556610show ga
OBJECTIVES: To compare epidemiologic features of the second and third waves of the coronavirus disease 2019 (COVID-19) pandemic in South Korea. METHODS: Nationwide COVID-19 data were collected between 6 May and 30 December 2020. The degree of social activity was estimated using an Internet search trend analysis program for leisure-related keywords, including 'eating-out', 'trip' and 'get directions' (transportation). Demographics, transmission chains, case fatality rates, social activity levels and public health responses were compared between the second (13 August-18 September 2020) and third (4 November 2020-present) waves. RESULTS: In comparison with the second wave, the third wave was characterized by delayed strengthening of social distancing policies (3 vs. 15 days), longer duration (36 vs. >56 days) and a higher case fatality rate (0.91% vs. 1.26%). There were significant differences in transmission chains between the second and third waves (P < 0.01). In comparison with the second wave, the proportion of local clusters (24.8% vs. 45.7%) was lower in the third wave, and personal contact transmission (38.5% vs. 25.9%) and unknown routes of transmission (23.5% vs. 20.8%) were higher in the third wave. CONCLUSION: Early and timely interventions with strengthened social distancing policies should be implemented to suppress and control the COVID-19 pandemic effectively.