Search results for "Airborne transmission"

showing 3 items of 3 documents

Face masks effectively limit the probability of SARS-CoV-2 transmission.

2021

Masking out air sharing The effectiveness of masks in preventing the transmission of severe acute respiratory syndrome coronavirus 2 has been debated since the beginning of the COVID-19 pandemic. One important question is whether masks are effective despite the forceful expulsion of respiratory matter during coughing and sneezing. Cheng et al. convincingly show that most people live in conditions in which the airborne virus load is low. The probability of infection changes nonlinearly with the amount of respiratory matter to which a person is exposed. If most people in the wider community wear even simple surgical masks, then the probability of an encounter with a virus particle is even fur…

2019-20 coronavirus outbreakCoronavirus disease 2019 (COVID-19)EpidemiologyGeochem PhysComputer scienceGeneral Science & TechnologyvirusesSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2)Airborne transmissionlaw.inventionVaccine RelatedlawReportBiodefenseStatisticsLungMultidisciplinaryPreventionfungiFace masksTransmission (mechanics)Infectious DiseasesEmerging Infectious DiseasesGood Health and Well BeingInfectionViral loadReports
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Noninvasive respiratory support in acute hypoxemic respiratory failure associated with COVID-19 and other viral infections

2020

ABSTRACTIntroductionNoninvasive respiratory support (NRS) such as noninvasive ventilation (NIV) and high flow nasal therapy (HFNT) have been used in the treatment of acute hypoxemic respiratory failure (AHRF) related to the coronavirus disease (COVID-19) and other viral infections. However, there is a lack of consensus in favor of or against NRS use due to the risks of worsening hypoxemia, intubation delay, and aerosols environmental contamination associated with the use of these tools. We aimed to summarize the evidence on the use of NRS in adult patients with COVID-19 and other viral pneumonia (i.e. H1N1, SARS, MERS) and AHRF. We also searched for studies evaluating the risk of aerosoliza…

Adultmedicine.medical_specialtyContext (language use)Diseasemedicine.disease_causeHIGH FLOW NASAL THERAPYAirborne transmissionHFNCHypoxemialaw.invention03 medical and health sciences0302 clinical medicineInfluenza A Virus H1N1 SubtypeRandomized controlled trial030202 anesthesiologylawmedicineHumansCOVID-19; Noninvasive ventilation Pneumonia viral Adult Humans Pandemics SARS-CoV-2 COVID-19 Coronavirus. Influenza A Virus H1N1 Subtype Noninvasive Ventilation Respiratory InsufficiencyH1N1 SubtypeIntensive care medicinePandemicsAerosolizationCoronavirusNoninvasive VentilationPneumonia viralSARS-CoV-2business.industryCOVID-19030208 emergency & critical care medicinemedicine.diseaseCoronavirusAnesthesiology and Pain MedicineCoronavirus. Influenza A VirusViral pneumoniamedicine.symptomRespiratory InsufficiencybusinessHFNT
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High efficacy of face masks explained by characteristic regimes of airborne SARS-CoV-2 virus abundance

2021

Abstract Airborne transmission is an important transmission pathway for viruses, including SARS-CoV-2. Regions with a higher proportion of people wearing masks show better control of COVID-19, but the effectiveness of masks is still under debate due to their limited and variable efficiencies in removing respiratory particles. Here, we analyze experimental data and perform model calculations to show that this contrast can be explained by the different regimes of abundance of particles and viruses. Because of the large number of particles exhaled during human respiration and vocalization, indoor environments are usually in a particle-rich regime which means that masks cannot prevent the inhal…

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)virusesfungiAtmospheric sciencesAirborne transmissionViruslaw.inventionAerosolFace masksOrders of magnitude (bit rate)Transmission (mechanics)lawAbundance (ecology)Environmental science
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