《Nature,6月5日,Seroprevalence of immunoglobulin M and G antibodies against SARS-CoV-2 in China》

  • 来源专题:COVID-19科研动态监测
  • 编译者: zhangmin
  • 发布时间:2020-06-06
  • Seroprevalence of immunoglobulin M and G antibodies against SARS-CoV-2 in China

    Xin Xu, Jian Sun, Sheng Nie, Huiyuan Li, Yaozhong Kong, Min Liang, Jinlin Hou, Xianzhong Huang, Dongfeng Li, Tean Ma, Jiaqing Peng, Shikui Gao, Yong Shao, Hong Zhu, Johnson Yiu-Nam Lau, Guangyu Wang, Chunbao Xie, Li Jiang, Ailong Huang, Zhenglin Yang, Kang Zhang & Fan Fan Hou

    Nature Medicine (2020)

    Abstract

    Detection of asymptomatic or subclinical novel human coronavirus SARS-CoV-2 infection is critical for understanding the overall prevalence and infection potential of COVID-19. To estimate the cumulative prevalence of SARS-CoV-2 infection in China, we evaluated the host serologic response, measured by the levels of immunoglobulins M and G in 17,368 individuals, in the city of Wuhan, the epicenter of the COVID-19 pandemic in China, and geographic regions in the country, during the period from 9 March 2020 to 10 April 2020. In our cohorts, the seropositivity in Wuhan varied between 3.2% and 3.8% in different subcohorts. Seroposivity progressively decreased in other cities as the distance to the epicenter increased.

  • 原文来源:https://www.nature.com/articles/s41591-020-0949-6
相关报告
  • 《Nature,7月15日,Potently neutralizing and protective human antibodies against SARS-CoV-2》

    • 来源专题:COVID-19科研动态监测
    • 编译者:zhangmin
    • 发布时间:2020-07-28
    • Potently neutralizing and protective human antibodies against SARS-CoV-2 Seth J. Zost, Pavlo Gilchuk, […]James E. Crowe Jr Nature (2020) Abstract The COVID-19 pandemic is a major threat to global health1 for which there are limited medical countermeasures2,3. Moreover, we currently lack a thorough understanding of mechanisms of humoral immunity4. From a larger panel of human monoclonal antibodies (mAbs) targeting the spike (S) glycoprotein5, we identified several that exhibited potent neutralizing activity and fully blocked the receptor-binding domain of S (SRBD) from interacting with human ACE2 (hACE2). Competition-binding, structural, and functional studies allowed clustering of the mAbs into classes recognizing distinct epitopes on the SRBD as well as distinct conformational states of the S trimer. Potent neutralizing mAbs recognizing non-overlapping sites, COV2-2196 and COV2-2130, bound simultaneously to S and synergistically neutralized authentic SARS-CoV-2 virus. In two mouse models of SARS-CoV-2 infection, passive transfer of either COV2-2196 or COV2-2130 alone or a combination of both mAbs protected mice from weight loss and reduced viral burden and inflammation in the lung. In addition, passive transfer of each of two of the most potently ACE2 blocking mAbs (COV2-2196 or COV2-2381) as monotherapy protected rhesus macaques from SARS-CoV-2 infection. These results identify protective epitopes on SRBD and provide a structure-based framework for rational vaccine design and the selection of robust immunotherapeutics.
  • 《Nature,5月6日,Applying principles of behaviour change to reduce SARS-CoV-2 transmission》

    • 来源专题:COVID-19科研动态监测
    • 编译者:zhangmin
    • 发布时间:2020-05-07
    • Applying principles of behaviour change to reduce SARS-CoV-2 transmission Robert West, Susan Michie, G. James Rubin & Richard Amlôt Nature Human Behaviour (2020) Abstract Human behaviour is central to transmission of SARS-Cov-2, the virus that causes COVID-19, and changing behaviour is crucial to preventing transmission in the absence of pharmaceutical interventions. Isolation and social distancing measures, including edicts to stay at home, have been brought into place across the globe to reduce transmission of the virus, but at a huge cost to individuals and society. In addition to these measures, we urgently need effective interventions to increase adherence to behaviours that individuals in communities can enact to protect themselves and others: use of tissues to catch expelled droplets from coughs or sneezes, use of face masks as appropriate, hand-washing on all occasions when required, disinfecting objects and surfaces, physical distancing, and not touching one’s eyes, nose or mouth.