FLORIDA UNIVERSITY RESEARCH- VIABLE SARS-CoV-2 isolated from.airsample

Viable SARS-CoV-2 in the air of a hospital room with COVID-19 patients  View ORCID ProfileJohn A Lednicky, Michael Lauzardo, Z. Hugh Fan, Antarpreet S Jutla, Trevor B Tilly, Mayank Gangwar, Moiz Usmani, Sripriya N Shankar, Karim Mohamed, Arantza Eiguren-Fernandez, Caroline J Stephenson, Md. Mahbubul Alam, Maha A Elbadry, Julia C Loeb, Kuttichantran Subramaniam, Thomas B Waltzek, Kartikeya Cherabuddi, John Glenn Morris Jr., Chang-Yu Wu doi: https://doi.org/10.1101/2020.08.03.20167395 This 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.

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Now at this stage it can be take it be granted that Covid 19 is aur borne disease and spread upto 2- 4.8 metres . Sir it has been mentioned viral concentration or viral load form 6 to 74 TCID50 units/ L. But is there any chance of higher concentration in that particular close door room and the number of pt is more oviously it should be. Will the concentration remain same in open air ?

Thank you doctor
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This study clearly establishes the principle of aerosolisation of covid19 and transmission mode from 2meter to 8meters distance Mute question remains the same it is true for respiratory cases but nonrespiratory and asymptomatic cases are not the constituents of study

Thanx dr Vipin Bihari Jain
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Potential upto 2to4.8 m from the patients

Thank you doctor
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जानकारी देने के लिए धन्यवाद देता हूं।

Thanks for information.

Thanks Dr Vipin Bihari Jain
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Informative

Thanks scary

Really ...