《q40b2w3s03》

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  • 《Science,3月12日,Neutralization of SARS-CoV-2 lineage B.1.1.7 pseudovirus by BNT162b2 vaccine–elicited human sera》

    • 来源专题:COVID-19科研动态监测
    • 编译者:zhangmin
    • 发布时间:2021-03-22
    • Neutralization of SARS-CoV-2 lineage B.1.1.7 pseudovirus by BNT162b2 vaccine–elicited human sera View ORCID ProfileAlexander Muik1, View ORCID ProfileAnn-Kathrin Wallisch1, View ORCID ProfileBianca Sänger1, View ORCID ProfileKena A. Swanson2, View ORCID ProfileJulia Mühl1, Wei Chen2, Hui Cai2, View ORCID ProfileDaniel Maurus1, Ritu Sarkar2, View ORCID ProfileÖzlem Türeci1, View ORCID ProfilePhilip R. Dormitzer2, View ORCID ProfileU?ur ?ahin1,3,* See all authors and affiliations Science  12 Mar 2021: Vol. 371, Issue 6534, pp. 1152-1153 DOI: 10.1126/science.abg6105 Abstract Recently, a new severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) lineage called B.1.1.7 (variant of concern: VOC 202012/01), which is reported to spread more efficiently and faster than other strains, emerged in the United Kingdom. This variant has an unusually large number of mutations, with 10 amino acid changes in the spike (S) protein, raising concerns that its recognition by neutralizing antibodies may be affected. In this study, we tested SARS-CoV-2-S pseudoviruses bearing either the Wuhan reference strain or the B.1.1.7 lineage spike protein with sera of 40 participants who were vaccinated in a previously reported trial with the messenger RNA–based COVID-19 vaccine BNT162b2. The immune sera had slightly reduced but overall largely preserved neutralizing titers against the B.1.1.7 lineage pseudovirus. These data indicate that the B.1.1.7 lineage will not escape BNT162b2-mediated protection.
  • 《Science,3月3日,Estimated transmissibility and impact of SARS-CoV-2 lineage B.1.1.7 in England》

    • 来源专题:COVID-19科研动态监测
    • 编译者:zhangmin
    • 发布时间:2021-03-09
    • Estimated transmissibility and impact of SARS-CoV-2 lineage B.1.1.7 in England Nicholas G. Davies1,*, View ORCID ProfileSam Abbott1,†, View ORCID ProfileRosanna C. Barnard1,†, View ORCID ProfileChristopher I. Jarvis1,†, Adam J. Kucharski1,†,... Science  03 Mar 2021: eabg3055 DOI: 10.1126/science.abg3055 Abstract A novel SARS-CoV-2 variant, VOC 202012/01 (lineage B.1.1.7), emerged in southeast England in November 2020 and is rapidly spreading toward fixation. Using a variety of statistical and dynamic modelling approaches, we estimate that this variant has a 43–90% (range of 95% credible intervals 38–130%) higher reproduction number than preexisting variants. A fitted two-strain dynamic transmission model shows that VOC 202012/01 will lead to large resurgences of COVID-19 cases. Without stringent control measures, including limited closure of educational institutions and a greatly accelerated vaccine roll-out, COVID-19 hospitalisations and deaths across England in 2021 will exceed those in 2020. Concerningly, VOC 202012/01 has spread globally and exhibits a similar transmission increase (59–74%) in Denmark, Switzerland, and the United States.