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10.1128/mSphere.00442-20

http://scihub22266oqcxt.onion/10.1128/mSphere.00442-20
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32581071!7316493!32581071
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suck abstract from ncbi


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pmid32581071      mSphere 2020 ; 5 (3): ä
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  • Asymptomatic COVID-19 Patients Can Contaminate Their Surroundings: an Environment Sampling Study #MMPMID32581071
  • Wei L; Lin J; Duan X; Huang W; Lu X; Zhou J; Zong Z
  • mSphere 2020[Jun]; 5 (3): ä PMID32581071show ga
  • The contamination of patients' surroundings by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) remains understudied. We sampled the surroundings and the air of six negative-pressure non-intensive care unit (non-ICU) rooms in a designated isolation ward in Chengdu, China, that were occupied by 13 laboratory-confirmed coronavirus disease 2019 (COVID-19) patients who had returned from overseas travel, including 2 asymptomatic patients. A total of 44 of 112 (39.3%) surface samples were positive for SARS-CoV-2 as detected by real-time PCR, suggesting extensive contamination, although all of the air samples were negative. In particular, in a single room occupied by an asymptomatic patient, four sites were SARS-CoV-2 positive, highlighting that asymptomatic COVID-19 patients do contaminate their surroundings and impose risks for others with close contact. Placement of COVID-19 patients in rooms with negative pressure may bring a false feeling of safety, and the importance of rigorous environment cleaning should be emphasized.IMPORTANCE Although it has been well recognized that the virus SARS-CoV-2, the causative agent of COVID-19, can be acquired by exposure to fomites, surprisingly, the contamination of patients' surroundings by SARS-CoV-2 is largely unknown, as there have been few studies. We performed an environmental sampling study for 13 laboratory-confirmed COVID-19 patients and found extensive contamination of patients' surroundings. In particular, we found that asymptomatic COVID-19 patients contaminated their surroundings and therefore imposed risks for other people. Environment cleaning should be emphasized in negative-pressure rooms. The findings may be useful to guide infection control practice to protect health care workers.
  • |*Environmental Exposure[MESH]
  • |*Environmental Microbiology[MESH]
  • |Asymptomatic Infections/*epidemiology[MESH]
  • |Betacoronavirus/*isolation & purification[MESH]
  • |COVID-19[MESH]
  • |Containment of Biohazards/methods[MESH]
  • |Coronavirus Infections/*epidemiology/pathology[MESH]
  • |Environment[MESH]
  • |Humans[MESH]
  • |Pandemics[MESH]
  • |Pneumonia, Viral/*epidemiology/pathology[MESH]


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