PHWR Public Health Weekly Report

Vol.16 No.43, November 09, 2023 Article TypeQuickStatsSurveillance Reports

• Surveillance Reports 2023-11-09

  1 2214 459

  The Survey of Infection Status of Clonorchis sinensis Metacercariae of Freshwater Fish in 2022

  Myoung-Ro Lee, Jung-Won Ju, Seon-Ok Baek, Young-Ju Lee, Hee-Il Lee

  Public Health Weekly Report 2023; 16(43): 1455-1463 https://doi.org/10.56786/PHWR.2023.16.43.1

  

  

  Abstract

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  The Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency have been investigated the infection status of Clonorchis sinensis metacercariae (CsMc) in freshwater fish as part of an effort for reducing the parasite infection rate in the Republic of Korea. In this survey, all fishes were collected in 10 regions and examined infection rate using the artificial digestion method. The infection rate of CsMc was highest in Youngjeon Stream (50%) located in Chungsong-gun, Gyeongsangbuk-do. The infection rate of CsMc by fish species was highest in Pungtungia herzi with 1,258 CsMc followed by Squalidus japonicus Koreanus, Microphysogobio yaluensis, Pseudorasbora parva, Acheilognathus lanceolatus. Infection risk that infection intensity per fish was highest in Gilan Stream with 62.3. To reduce infection rate of Clonorchis sinensis (C. sinensis , Cs), it is necessary to conduct survey on infection risk in C. sinensis prevalent areas and provide information to local residents people about at the level of infection risk.

• Surveillance Reports 2023-11-09

  9 728 183

  Severity of COVID-19 Associated with SARS-CoV-2 Variants Dominant Period in the Republic of Korea

  Se-Jin Jeong, Misuk An, Minjeong Jang, So Young Choi, You-Jung Choi, Jinhwa Jang, Boyeong Ryu, Shin Young Park, Seong-Sun Kim

  Public Health Weekly Report 2023; 16(43): 1464-1487 https://doi.org/10.56786/PHWR.2023.16.43.2

  

  

  Abstract

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  This report seeks to compare and analyze the severity trends of coronavirus disease 2019 (COVID-19) in Republic of Korea during periods of dominant variant virus prevalence. The analysis covers the period from January 20, 2020, to July 31, 2023, categorizing the severity of COVID-19 cases both throughout the entire period and during periods of dominant variant virus prevalence. Up until July 31, 2023, a total of 34,082,179 confirmed cases of COVID-19 have been recorded, resulting in 37,760 cases (0.11%) of severe illness and 35,644 deaths (0.11%). During the dominant prevalence of the Omicron BA.1 and BA.2 variants (from January 16, 2022 to July 9, 2022), severe cases and deaths were most widespread, accounting for 10,460 cases (27.7%) of severe illness and 18,679 deaths (52.4%). Concerning case severity rate and case fatality rate, the period before the dominant prevalence of the Delta variant (from January 20, 2020 to July 24, 2021) had the highest rates at 2.98% and 1.15%, respectively. In contrast, during the dominant prevalence of the Omicron XBB variant (from April 16, 2023 to July 31, 2023), these rates were at their lowest, reaching 0.12% for severity and 0.04% for fatality. Despite the continuous emergence of new variant viruses after the onset of COVID-19, the case severity rate during the dominant prevalence of the Omicron XBB variant has decreased to 0.04%, comparable to the risk level seen with influenza. However, the case fatality rate by age group is <0.01% for 0–49 years old, 0.01% for 50–59 years old, and 0.03% for 60–69 years old, while the case fatality rate for 80+ years old is 0.56%, which is still higher than other age groups, so the prevention policy of prioritizing high-risk groups should be continued.

• QuickStats 2023-11-09

  2 544 176

  Trends in Prevalence of Diabetes, 2011–2021

  Public Health Weekly Report 2023; 16(43): 1488-1489 https://doi.org/10.56786/PHWR.2023.16.43.3

  

  

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