My name is trouble, my first name is mess...
https://www.medrxiv.org/content/10.1....03.20167395v1
Quote:
|
There currently is substantial controversy about the role played by SARS-CoV-2 in aerosols in disease transmission, due in part to detections of viral RNA but failures to isolate viable virus from clinically generated aerosols. Methods - Air samples were collected in the room of two COVID-19 patients, one of whom had an active respiratory infection with a nasopharyngeal (NP) swab positive for SARS-CoV-2 by RT-qPCR. By using VIVAS air samplers that operate on a gentle water-vapor condensation principle, material was collected from room air and subjected to RT-qPCR and virus culture. The genomes of the SARS-CoV-2 collected from the air and of virus isolated in cell culture from air sampling and from a NP swab from a newly admitted patient in the room were sequenced. Findings - Viable virus was isolated from air samples collected 2 to 4.8m away from the patients. The genome sequence of the SARS-CoV-2 strain isolated from the material collected by the air samplers was identical to that isolated from the NP swab from the patient with an active infection. Estimates of viable viral concentrations ranged from 6 to 74 TCID50 units/L of air. Interpretation - Patients with respiratory manifestations of COVID-19 produce aerosols in the absence of aerosol-generating procedures that contain viable SARS-CoV-2, and these aerosols may serve as a source of transmission of the virus.
|
As Martin Shaw said in
Jaws: "We need a bigger mask." Cotton household masks obviously don't cut it.
Heck, I, a medical layman with not more than some general edcuation in popular science, say that since February:
wear FFP masks. In case of inner rooms with many people breathing out:
FFP3 masks.The filter a bit more than FFP2.
And yes, I know its hell to wear them at 33°C in summer.
If ypou stay inside for logner time with many people; consider to seal your eyes. Plastic face shields are a bad joke. Even worse are thzese stupid things where somebody wears just a tiny plastic plate 2 cm below nose, mounted on some frame, and not covering neither nose nor mouth. Pure alibi, zero functionality.