Browsing by Subject "Untouched surfaces"

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    Confirmation of SARS-CoV-2 airborne dissemination indoors using "COVID-19 traps"
    (Elsevier Ltd., 2021-12-22) Navas-Carrillo, Diana; Moreno-Docón, Antonio; Ortega-García, Juan A.; Torres-Cantero, Alberto M.; Garcia-Vázquez, Elisa; Ramírez, Pablo; Orenes-Piñero, Esteban; Cirugía, Pediatría y Obstetricia y Ginecología
    Understanding the capacity of SARS-CoV-2 virus to infect by surfaces and by airborne dissemination has become in one of the most important issues in the world nowadays. Thus, the aim of this study was to confirm aerosol dissemination from patients with coronavirus infection using “COVID-19 traps” that included different untouched surfaces within them. In a previous study, we evaluated the presence of the virus and its stability in 6 different surfaces placed in the rooms of 6 patients with a positive diagnostic of COVID-19. For that, we performed a case series study with 180 samples collected from the surfaces included into the “COVID-19 traps” located in the rooms of patients in a COVID-19 ward unit (CWU) at a Spanish referral hospital at 24, 48 and 72 h. RNA was extracted from the surfaces with a swab and subsequently analyzed with RT-PCR to evaluate the presence of the virus and its stability. Positives were found in almost all the rooms and at all analyzed times. Surfaces could not be touched by patients or health workers, so viral spreading was unequivocally produced by airborne. In addition, ROC curves were performed to corroborate that airborne dissemination was directly associated with patients’ viral load. Thus, aerosol dissemination and patients’ viral load were confirmed as key parameters for SARS-CoV-2 infection. Our results point the importance of SARS-CoV-2 virus airborne dissemination indoors and may shed some light in this debate.
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    Confirmation of SARS-CoV-2 airborne dissemination indoors using “COVID-19 traps”
    (Elsevier, 2021-12-15) Navas-Carrillo, Diana; Moreno-Docón, Antonio; Ortega-García, Juan A.; Torres-Cantero, Alberto M.; García-Vázquez, Elisa; Ramírez, Pablo; Orenes-Piñero, Esteban; Medicina
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    vidences of SARS-CoV-2 virus air transmission indoors using several untouched surfaces: A pilot study
    (Elsevier, 2021-01-10) Baño, Francisco; Navas, Diana; Moreno-Docon, Antonio; Marin, juana María; Misiego, Rocio; Ramirez, Pablo; Orenes-Piñero, Esteban; Cirugía, Pediatría y Obstetricia y Ginecología
    Nowadays, there is an important controversy about coronavirus air transmission. The aim of this study was to determine aerosol transmission from patients with coronavirus infection using "COVID-19 traps" that included different untouched surfaces within them. 42 swab samples of 6 different surfaces placed in the rooms of 6 patients with a positive diagnostic of COVID-19 were analyzed with RT-PCR technique to evaluate the presence of the virus and its stability. Samples were collected at 24, 48 and 72 h. Patients were in an intensive care unit (ICU) and in a COVID-19 ward unit (CWU) at a Spanish referral hospital. None of the samples placed in the ICU unit were positive for COVID-19. However, two surfaces, placed in a CWU room with a patient that required the use of respiratory assistance were positive for coronavirus at 72 h. Surfaces could not be touched by patients or health workers, so viral spreading was unequivocally produced by air transmission. Thus, fomites should be considered as a possible mode of transmission of coronavirus and frequent disinfection of surfaces should be taken into account. Our results, although preliminary, point the importance of SARS-CoV-2 virus air transmission indoors and may shed some light in this debate.