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Characteristics of COVID-19 outbreaks and risk factors for transmission at an army training center in South Korea from June to August 2021
U Jin Cho, Seongjin Wang, Seonju Yi, Yeon Hwa Choi, Eun-Young Kim, Jin A Kim, Sanghwan Bae, Jungyeon Yu, Jangkyu Choi, Young-Joon Park
Osong Public Health Res Perspect. 2022;13(4):263-272.   Published online July 27, 2022
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AbstractAbstract PDF
It is crucial to establish the characteristics of coronavirus disease 2019 (COVID-19) outbreaks at army training centers to develop preventive measures. Therefore, this study aimed to determine the COVID-19 transmission patterns and risk factors in a sequence of outbreaks at an army training center from June to August 2021.
This study included 1,324 trainees at an army training center where outbreaks occurred from June to August 2021. The outbreak was qualitatively analyzed according to the period, attack rate, demographic characteristics, vaccination history, and living areas. An aerodynamic experiment was performed to evaluate aerosol transmission in living areas.
Three outbreaks occurred at the army training center from June to August 2021. The first, second, and third outbreaks lasted for 32, 17, and 24 days, and the attack rates were 12.8%, 18.1%, and 8.9%, respectively. Confirmed cases were distributed in all age groups. Recruits and the unvaccinated were at higher risk for COVID-19. The aerodynamic experiment verified the possibility of aerosol transmission within the same living area.
COVID-19 transmission at army training centers should be minimized through quarantine and post-admission testing during the latency period as part of integrated measures that include facility ventilation, vaccination, indoor mask-wearing, and social distancing.
Seroprevalence of antibodies to SARS-CoV-2 and predictors of seropositivity among employees of a teaching hospital in New Delhi, India
Pragya Sharma, Rohit Chawla, Ritika Bakshi, Sonal Saxena, Saurav Basu, Pradeep Kumar Bharti, Meera Dhuria, S. K. Singh, Panna Lal
Osong Public Health Res Perspect. 2021;12(2):88-95.   Published online April 29, 2021
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  • 4 Citations
AbstractAbstract PDFSupplementary Material
Healthcare workers (HCWs) are at a high risk of contracting severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) due to the increased likelihood of clinical exposure during patient management. The study objective was to determine the seroprevalence of antibodies to SARS-CoV-2 and its predictors among hospital employees.
The cross-sectional study was conducted at a teaching hospital from August 2020 to September 2020 among 1,401 employees, including 1,217 HCWs, in New Delhi, India. The serum samples were examined for immunoglobulin G (IgG) antibodies to SARS-CoV-2 using the COVID Kavach-Anti-SARS-CoV-2 IgG Antibody Detection enzyme-linked immunosorbent assay kit. Data were collected electronically using the EpiCollect mobile platform. A p<0.05 was considered to indicate statistical significance.
A total of 169 participants (12.1%) had detectable IgG antibodies to SARS-CoV-2. The highest seropositivity rate was observed in the administrative staff (20.1%), while it was lowest among medical doctors (5.5%, p<0.001). Male sex and ever having lived in a containment zone were independently associated with past infection with SARS-CoV-2.
The seroprevalence of SARS-CoV-2 infection in health workers may be lower than in the general population in New Delhi. However, non-pharmaceutical interventions were not associated with a reduction in the risk of acquisition of SARS-CoV-2.


Citations to this article as recorded by  
  • Assessment of potential risk factors for COVID-19 among health care workers in a health care setting in Delhi, India -a cohort study
    Mridu Dudeja, Aqsa Shaikh, Farzana Islam, Yasir Alvi, Mohammad Ahmad, Varun Kashyap, Vishal Singh, Anisur Rahman, Meely Panda, Neetu Shree, Shyamasree Nandy, Vineet Jain, Amitava Mukherjee
    PLOS ONE.2023; 18(1): e0265290.     CrossRef
  • Seroprevalence of IgG antibodies against SARS-CoV-2 in India, March 2020 to August 2021: a systematic review and meta-analysis
    Nuzrath Jahan, Adarsha Brahma, Muthusamy Santhosh Kumar, Bhavani Shankara Bagepally, Manickam Ponnaiah, Tarun Bhatnagar, Manoj V Murhekar
    International Journal of Infectious Diseases.2022; 116: 59.     CrossRef
  • Risk Factors for COVID-19 Infection Among Healthcare Workers. A First Report From a Living Systematic Review and meta-Analysis
    Tafadzwa Dzinamarira, Sphamandla Josias Nkambule, Mbuzeleni Hlongwa, Malizgani Mhango, Patrick Gad Iradukunda, Itai Chitungo, Mathias Dzobo, Munyaradzi Paul Mapingure, Innocent Chingombe, Moreblessing Mashora, Roda Madziva, Helena Herrera, Pelagia Makanda
    Safety and Health at Work.2022; 13(3): 263.     CrossRef
  • Seroprevalence of SARS-CoV-2 and Risk Assessment Among Healthcare Workers at a Dedicated Tertiary Care COVID-19 Hospital in Delhi, India: A Cohort Study
    Pragya Sharma, Rohit Chawla, Saurav Basu, Sonal Saxena, Warisha Mariam, Pradeep Kumar Bharti, Shivani Rao, Neha Tanwar, Anisur Rahman, Mohammad Ahmad
    Cureus.2021;[Epub]     CrossRef

PHRP : Osong Public Health and Research Perspectives