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Epidemiologic Investigations
- Epidemiological characteristics and risk factors of suspected and confirmed mpox cases during the 2022-2023 epidemic in the Capital Region, Korea
- Mingyeol Shim, Soo Hyeon Cho, Seung Eun Lee, Taeyoung Kim
- Epidemiol Health. 2024;46:e2024092. Published online November 24, 2024
- DOI: https://doi.org/10.4178/epih.e2024092
- 1,975 View
- 85 Download
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Abstract
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AbstractOBJECTIVES
This study investigated the general characteristics of laboratory-confirmed mpox patients in the Capital Region of Korea, as well as the risk factors for mpox infection, particularly focusing on the characteristics of polymerase chain reaction (PCR)-positive and PCR-negative cases.METHODSWe investigated 160 adults, excluding 4 minors, from 164 suspected mpox patients reported in Seoul, Gyeonggi, Incheon, and Gangwon from June 21, 2022 to October 31, 2023. Data were collected via telephone and face-to-face interviews. A statistical analysis of the general characteristics of the infection was conducted using frequency analysis and logistic regression.RESULTSOf the 160 suspected cases of mpox, 59.3% (n=95) tested positive via mpox-PCR. Among the confirmed cases, 97.9% (n=93) were male. PCR-positive patients typically presented with genital and anal skin rashes or mucosal lesions, accompanied by pain. Additionally, 35.5% (n=33) of the male patients had human immunodeficiency virus (HIV) infections. Most confirmed cases (94.7%, 90/95) were believed to have contracted mpox through sexual contact during the maximal incubation period of 21 days prior to symptom onset, with a significant number reporting same-sex or casual contact. The most commonly collected and highest-yielding specimens from PCR-positive patients were from skin or mucosal lesions, whereas blood samples demonstrated the lowest percent positivity.CONCLUSIONSIn the Capital Region, most PCR-positive cases were male patients in their 30s who had sexual contacts and exhibited symptoms, aligning with findings from previous studies. These results provide a foundation for the differential diagnosis concerning mpox infection and the selection of PCR-test samples in clinical settings. -
SummaryKorean summary
- 대한민국 수도권의 mpox 의심환자 160명 중 59.3%(n=95)가 mpox-PCR 검사에서 양성으로 확인되었다. - 확진 환자 중 97.9%(n=93)는 남성이었고 35.5%(n=33)는 HIV에 감염되었으며 엠폭스 감염의 위험요인으로는 일회성 파트너와의 성적 접촉, 항문생식기 병변, 병변 부위의 통증이 포함되었다. - 양성 환자의 검체 특성은 피부 및 점막 병변 샘플이 가장 높은 양성률을 보였고, 혈액 샘플은 가장 낮은 양성률을 보였다.Key Message
- Of the 160 suspected mpox cases in the Capital Region of South Korea, 59.3% (n=95) were confirmed as PCR-positive. - Among the confirmed cases, 97.9% were male and 35.5% were infected with HIV, and risk factors of mpox infection included sexual contact with casual partner, anogenital lesion, and pain on lesions. - Skin and mucosal lesion samples had the highest positivity rate, while blood samples had the lowest.
- Analysis of the on-ship transmission of the COVID-19 mass outbreak on the Republic of Korea Navy amphibious warfare ship
- Soo Hyeon Cho, Young-Man Kim, Gyeongyong Seong, Sunkyun Park, Seoncheol Park, Sang-Eun Lee, Young Joon Park
- Epidemiol Health. 2022;44:e2022065. Published online August 11, 2022
- DOI: https://doi.org/10.4178/epih.e2022065
- 11,582 View
- 445 Download
- 1 Web of Science
- 1 Crossref
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Abstract
Summary
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Supplementary Material -
AbstractOBJECTIVES
This investigation was conducted to determine the size and pattern, source, and transmission route of the coronavirus disease 2019 (COVID-19) outbreak on the Republic of Korea Navy (ROKN) amphibious warfare ship.METHODSWe investigated the characteristics of all crew members and tracked the medical records of the confirmed cases. Fourteen essential ship operation personnel were interviewed. The study design was a retrospective cohort study, and the incidence rate ratio was through a statistical program.RESULTSThe COVID-19 incidence on the ROKN amphibious warfare ship was 44.7% (38/85). It was estimated that the main propagation route started from the 1st floor worker, which spread to the same floor, and then to other floors. In the case of the working area, the incidence rate of crew members below the 1st floor without ventilation was higher than those on the 2nd or higher floors with natural ventilation.CONCLUSIONSThis case is the first case of a COVID-19 outbreak on the ROKN amphibious warfare ship, and it is estimated that the incidence rate is high because of the closed and dense environment. To prevent the spread of various respiratory diseases including COVID-19, unified mitigation such as vaccination, observing personal quarantine rules, periodic ventilation, preemptive testing, and blocking transmission through prompt contact management is necessary. -
SummaryKorean summary
본 조사는 국내 첫 해군 상륙함 내 코로나19 집단발생의 규모 및 양상, 감염원과 전파경로를 규명하기 위해 수행되었다. 해군 상륙함에서의 발생률은 44.7%였으며 자연 환기가 가능한 2층 이상 근무자에 비해 환기가 불가능한 1층 이하 근무자의 발생률이 높았고 이는 통계적으로 유의했다. 밀폐된 환경에서 밀접한 생활을 하는 해군 상륙함의 특성을 고려하여 개인방역수칙 준수, 주기적 환기, 선제적 검사, 신속한 접촉자 관리 등을 통한 전파 차단이 필요할 것으로 판단된다.Key Message
This investigation was conducted to determine the size and pattern of the outbreak of the COVID-19 infection, the source of infection and the transmission route on the ROK Navy Amphibious Warfare ship. The incidence on ROKN Amphibious Warfare ship was 44.7% (38/85) and the incidence rate of crew members below the first floor without ventilation was higher than those on the second floor or higher with natural ventilation. To prevent various respiratory diseases including COVID-19, unified mitigation such as vaccination, observing personal quarantine rules, periodic ventilation, preemptive testing, and blocking transmission through prompt contact management is necessary. -
Citations
Citations to this article as recorded by
- Indoor Air Quality and COVID-19: A Scoping Review
Axelle Braggion, Adeline Dugerdil, Olwen Wilson, Francesca Hovagemyan, Antoine Flahault
Public Health Reviews.2024;[Epub] CrossRef
- Indoor Air Quality and COVID-19: A Scoping Review
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