The speed of Sars-CoV-2 infection in employees of an academic hospital before vaccine acces
Main Article Content
Abstract
Objective. Study aimed to estimate the speed of SARS-CoV2 infection according to healthcare workers’ jobs at hospital.
Methodology. A prospective cohort study was conducted. The ANOVA procedure was used to evaluate the differences among three different hospital job types and the Kaplan-Meier procedure to estimate the median speed of infection.
Results. There was difference between the frequency of Sars-CoV-2 infection between women’s cumulative incidence rate of 27.7% compared to that of men at 22.3%, Chi2 = 4.24 DF = 1, p = 0.04. The average age of the three work groups (Clinicians, administrative staff, and maintenance workers) showed also difference (F Snedecor = 19.2 DF = 2, p = 0.000). There was no statistically significant difference regarding the speed of SARS-CoV-2 infection according to sex (Log Rank = 0.02 DF = 1, p = 0.89). In addition, there was no difference regarding the speed of infection according to the hospital job performed (Log Rank = 3.74 DF = 2, p = 0.15).
Conclusions. Infection tends to be more frequent among women. There is no difference in infection speed among sexes, nor among jobs performed. Infection prevention measures must be reinforced, to avoid contagion and prevent its spread within the hospital.
Article Details
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References
2. Recuento de casos de Covid-19 diagnosticados en el Personal de la Salud, Colombia, 2020-2022 Boletín del INS, con fecha de corte: 11 de enero de 2022 https://www.ins.gov.co/Noticias/Paginas/coronavirus-personal-salud.aspx
3. Koh D. Occupational risks for COVID-19 infection [Editorial]. Occup Med (Lond). 2020; 70:3-5. [PMID: 32107548] doi:10.1093/occmed/kqaa036
4. Chou R, Dana T, Buckley D, et al. Healthcare workers and coronaviruses: epidemiology and risk factors for infection rapid review. World Health Organization. 2020.
5. Mutambudzi M, Niedzwiedz C, Macdonald EB, et al. Occup Environ Med 2021;78:307–314
6. CDC COVID-19 Response Team. Characteristics of Health Care Personnel with COVID- 19 - United States, February 12-April 9, 2020. MMWR Morbidity and mortality weekly report 2020; 69(15):477-81
7. Elisa T. Lee. Statistical Methods for Survival Data Analysis. Second edition. John Wiley & Sons, Inc., 1992.
8. A. Gouveia Oliveira. Biostatistics Decoded. John Wiley & Sons, Ltda, 2013.
9. Chap T. Lee. Introductory Biostatistics. John Wiley & Sons Publication, 2003.
10. Schoenfeld D. Partial residuals for the proportional hazards regression model. Biometrika. 198 2; 69(1):239–41. http://refhub.elsevier.com/S2667-193X(22)00114-4/sbref0024
11. SAS Institute Inc., SAS 9.4. Applications based on SAS software, 2021. 12. SPSS 26 IBM Inc. 2021.
13. Mohamed Ghaith Al-Kuwari et al. Epidemiology characteristics of Covid19 infection amongst primary health care workers in Qatar: March-October 2020. Front. Public Health 9:679254.
Doi: 10.3389/fpubh.2021.679254 https://www.frontiersin.org/articles/10.3389/fpubh.2021.679254/full
14. Albuquerque MFPM, de Souza WV, Montarroyos UR, Pereira CR, Braga C, Barreto de Araújo TV, et al. Risk of SARS-CoV-2 infection among front-line health care workers in Northeast Brazil: a respondent-driven sampling approach. BMJ Open [Online]. 2022 Jun 6; 12(6):e058369. DOI: 10.1136/bmjopen-2021-05836915.
15. Zółtowska, B. Baranska, I. Jachowicz, E, Sydor, W. Maziarz, B. Mydel, K. Rózanska, A. Wizner, B. Rosinski, J. Kossowska, M. et al. The Seroprevalence of SARS-CoV-2 Antibodies among HealthCare Workers in University Hospital in Krakow before the Era of Vaccination. Int. J. Environ. Res. Public Health 2022, 19, 4044.
https://doi.org/10.3390/ijerph19074044
16. Piero Poletti at al. Seroprevalence of and Risk Factors Associated With SARS-CoV-2 Infection in Health Care Workers during the Early COVID-19 Pandemic in Italy JAMA Network Open. 2021, 4(7):e2115699. Doi:10.1001/jamanetworkopen.2021.15699