《JAMA,7月13日,Airborne Transmission of SARS-CoV-2 Theoretical Considerations and Available Evidence》

  • 来源专题:COVID-19科研动态监测
  • 编译者: zhangmin
  • 发布时间:2020-07-28
  • Airborne Transmission of SARS-CoV-2

    Theoretical Considerations and Available Evidence

    Michael Klompas, MD, MPH1,2; Meghan A. Baker, MD, ScD1,2; Chanu Rhee, MD, MPH1,2

    Author Affiliations Article Information

    JAMA. Published online July 13, 2020. doi:10.1001/jama.2020.12458

    The coronavirus disease 2019 (COVID-19) pandemic has reawakened the long-standing debate about the extent to which common respiratory viruses, including the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), are transmitted via respiratory droplets vs aerosols. Droplets are classically described as larger entities (>5 μm) that rapidly drop to the ground by force of gravity, typically within 3 to 6 feet of the source person. Aerosols are smaller particles (≤5 μm) that rapidly evaporate in the air, leaving behind droplet nuclei that are small enough and light enough to remain suspended in the air for hours (analogous to pollen).

  • 原文来源:https://jamanetwork.com/journals/jama/fullarticle/2768396?resultClick=1
相关报告
  • 《JAMA,5月13日,SARS-CoV-2 Rates in BCG-Vaccinated and Unvaccinated Young Adults》

    • 来源专题:COVID-19科研动态监测
    • 编译者:xuwenwhlib
    • 发布时间:2020-05-14
    • SARS-CoV-2 Rates in BCG-Vaccinated and Unvaccinated Young Adults Uri Hamiel, MD1; Eran Kozer, MD1; Ilan Youngster, MD, MMSc1 Author Affiliations Article Information JAMA. Published online May 13, 2020. doi:10.1001/jama.2020.8189 Confirmed cases of coronavirus disease 2019 (COVID-19) and case-fatality rates vary among countries. One reason could be national policies regarding childhood BCG vaccination, with fewer confirmed cases and a lower death toll reported in countries with vs without universal BCG vaccine coverage.1,2 Comparing outbreak characteristics between countries is influenced by potential confounders such as different phases of outbreak, mean age of affected population, management of the pandemic, amount of tests being administered, definitions of COVID-19–related deaths, or underreporting.
  • 《JAMA,6月8日,Clinical Characteristics of 58 Children With a Pediatric Inflammatory Multisystem Syndrome Temporally Associated With SARS-CoV-2》

    • 来源专题:COVID-19科研动态监测
    • 编译者:xuwenwhlib
    • 发布时间:2020-06-09
    • Clinical Characteristics of 58 Children With a Pediatric Inflammatory Multisystem Syndrome Temporally Associated With SARS-CoV-2 Elizabeth Whittaker, MD1,2; Alasdair Bamford, MD3,4; Julia Kenny, MD5,6; et alMyrsini Kaforou, PhD2; Christine E. Jones, MD7; Priyen Shah, MD2; Padmanabhan Ramnarayan, MD1,8; Alain Fraisse, MD9; Owen Miller, MD10,11; Patrick Davies, MD12; Filip Kucera, MD13; Joe Brierley, MD14; Marilyn McDougall, MD6,15; Michael Carter, MD6,15; Adriana Tremoulet, MD16; Chisato Shimizu, MD16; Jethro Herberg, MD1,2; Jane C. Burns, MD16; Hermione Lyall, MD1; Michael Levin, MD2; for the PIMS-TS Study Group and EUCLIDS and PERFORM Consortia Author Affiliations Article Information JAMA. Published online June 8, 2020. doi:10.1001/jama.2020.10369 Abstract Importance  In communities with high rates of coronavirus disease 2019, reports have emerged of children with an unusual syndrome of fever and inflammation. Objectives  To describe the clinical and laboratory characteristics of hospitalized children who met criteria for the pediatric inflammatory multisystem syndrome temporally associated with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (PIMS-TS) and compare these characteristics with other pediatric inflammatory disorders. Design, Setting, and Participants  Case series of 58 children from 8 hospitals in England admitted between March 23 and May 16, 2020, with persistent fever and laboratory evidence of inflammation meeting published definitions for PIMS-TS. The final date of follow-up was May 22, 2020. Clinical and laboratory characteristics were abstracted by medical record review, and were compared with clinical characteristics of patients with Kawasaki disease (KD) (n = 1132), KD shock syndrome (n = 45), and toxic shock syndrome (n = 37) who had been admitted to hospitals in Europe and the US from 2002 to 2019.