| Autor: |
Bays, Derek J., Nguyen, Minh-Vu H., Cohen, Stuart H., Waldman, Sarah, Martin, Carla S., Thompson, George R., Sandrock, Christian, Tourtellotte, Joel, Pugashetti, Janelle Vu, Phan, Chinh, Nguyen, Hien H., Warner, Gregory Y., Penn, Bennett H. |
| Zdroj: |
Infection Control & Hospital Epidemiology; September 2021, Vol. 42 Issue: 9 p1046-1052, 7p |
| Abstrakt: |
AbstractObjective:To describe the pattern of transmission of severe acute respiratory coronavirus virus 2 (SARS-CoV-2) during 2 nosocomial outbreaks of coronavirus disease 2019 (COVID-19) with regard to the possibility of airborne transmission.Design:Contact investigations with active case finding were used to assess the pattern of spread from 2 COVID-19 index patients.Setting:A community hospital and university medical center in the United States, in February and March, 2020, early in the COVID-19 pandemic.Patients:Two index patients and 421 exposed healthcare workers.Methods:Exposed healthcare workers (HCWs) were identified by analyzing the electronic medical record (EMR) and conducting active case finding in combination with structured interviews. Healthcare coworkers (HCWs) were tested for COVID-19 by obtaining oropharyngeal/nasopharyngeal specimens, and RT-PCR testing was used to detect SARS-CoV-2.Results:Two separate index patients were admitted in February and March 2020, without initial suspicion for COVID-19 and without contact or droplet precautions in place; both patients underwent several aerosol-generating procedures in this context. In total, 421 HCWs were exposed in total, and the results of the case contact investigations identified 8 secondary infections in HCWs. In all 8 cases, the HCWs had close contact with the index patients without sufficient personal protective equipment. Importantly, despite multiple aerosol-generating procedures, there was no evidence of airborne transmission.Conclusion:These observations suggest that, at least in a healthcare setting, most SARS-CoV-2 transmission is likely to take place during close contact with infected patients through respiratory droplets, rather than by long-distance airborne transmission. |
| Databáze: |
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