Transmission of COVID-19 within families and close contacts accounts for the majority of epidemic growth. Community mask wearing, hand washing and social distancing are thought to be effective but there is little evidence to inform or support community members on COVID-19 risk reduction within families.. ..The secondary attack rate in families was 23.0% (77/335). Face… Continue reading Reduction of secondary transmission of SARS-CoV-2 in households by face mask use, disinfection and social distancing: a cohort study in Beijing, China
Tag: face-masks
Identifying airborne transmission as the dominant route for the spread of #COVID-19
Various mitigation measures have been implemented to fight the coronavirus disease 2019 (COVID-19) pandemic, including widely adopted social distancing and mandated face covering. However, assessing the effectiveness of those intervention practices hinges on the understanding of virus transmission, which remains uncertain. Here we show that airborne transmission is highly virulent and represents the dominant route… Continue reading Identifying airborne transmission as the dominant route for the spread of #COVID-19
Aerosol Filtration Efficiency of Common Fabrics Used in Respiratory Cloth Masks
The emergence of a pandemic affecting the respiratory system can result in a significant demand for face masks. This includes the use of cloth masks by large sections of the public, as can be seen during the current global spread of COVID-19. However, there is limited knowledge available on the performance of various commonly available… Continue reading Aerosol Filtration Efficiency of Common Fabrics Used in Respiratory Cloth Masks
Effectiveness of Surgical and Cotton #Masks in Blocking SARS–CoV-2: A Controlled Comparison in 4 Patients
..Neither surgical nor cotton masks effectively filtered SARS–CoV-2 during coughs by infected patients. Prior evidence that surgical masks effectively filtered influenza virus (1) informed recommendations that patients with confirmed or suspected COVID-19 should wear face masks to prevent transmission (2). However, the size and concentrations of SARS–CoV-2 in aerosols generated during coughing are unknown. Oberg… Continue reading Effectiveness of Surgical and Cotton #Masks in Blocking SARS–CoV-2: A Controlled Comparison in 4 Patients
Respiratory virus shedding in exhaled breath and efficacy of face #masks
We identified seasonal human coronaviruses, influenza viruses and rhinoviruses in exhaled breath and coughs of children and adults with acute respiratory illness. Surgical face masks significantly reduced detection of influenza virus RNA in respiratory droplets and coronavirus RNA in aerosols, with a trend toward reduced detection of coronavirus RNA in respiratory droplets. Our results indicate… Continue reading Respiratory virus shedding in exhaled breath and efficacy of face #masks
2 Medical News 