Clinical and immunological assessment of asymptomatic SARS-CoV-2 infections.
Quanxin Long,Xiaojun Tang,Qiu Lin Shi,Qin Li,Hai Jun Deng,Jun Yuan,Jie Li Hu,Wei Xu,Yong Zhang,Fa Jin Lv,Kun Su,Fan Zhang,Jiang Gong,Bo Wu,Xia Mao Liu,Jin Jing Li,Jing Fu Qiu,Juan Chen,Ailong Huang +18 more
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TLDR
A cohort of asymptomatic patients infected with SARS-CoV-2 had significantly lower levels of virus-specific IgG antibodies compared to a cohort of age- and sex-matched symptomatic infected patients.Abstract:
The clinical features and immune responses of asymptomatic individuals infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have not been well described We studied 37 asymptomatic individuals in the Wanzhou District who were diagnosed with RT-PCR-confirmed SARS-CoV-2 infections but without any relevant clinical symptoms in the preceding 14 d and during hospitalization Asymptomatic individuals were admitted to the government-designated Wanzhou People's Hospital for centralized isolation in accordance with policy1 The median duration of viral shedding in the asymptomatic group was 19 d (interquartile range (IQR), 15-26 d) The asymptomatic group had a significantly longer duration of viral shedding than the symptomatic group (log-rank P = 0028) The virus-specific IgG levels in the asymptomatic group (median S/CO, 34; IQR, 16-107) were significantly lower (P = 0005) relative to the symptomatic group (median S/CO, 205; IQR, 58-382) in the acute phase Of asymptomatic individuals, 933% (28/30) and 811% (30/37) had reduction in IgG and neutralizing antibody levels, respectively, during the early convalescent phase, as compared to 968% (30/31) and 622% (23/37) of symptomatic patients Forty percent of asymptomatic individuals became seronegative and 129% of the symptomatic group became negative for IgG in the early convalescent phase In addition, asymptomatic individuals exhibited lower levels of 18 pro- and anti-inflammatory cytokines These data suggest that asymptomatic individuals had a weaker immune response to SARS-CoV-2 infection The reduction in IgG and neutralizing antibody levels in the early convalescent phase might have implications for immunity strategy and serological surveysread more
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Clinical course and risk factors for mortality of adult inpatients with COVID-19 in Wuhan, China: a retrospective cohort study
Fei Zhou,Ting Yu,Ronghui Du,Guohui Fan,Ying Liu,Zhibo Liu,Jie Xiang,Yeming Wang,Bin Song,Xiaoying Gu,Xiaoying Gu,Lulu Guan,Yuan Wei,Li Hui,Xudong Wu,Jiuyang Xu,Shengjin Tu,Yi Zhang,Hua Chen,Bin Cao +19 more
TL;DR: Prolonged viral shedding provides the rationale for a strategy of isolation of infected patients and optimal antiviral interventions in the future.
Journal ArticleDOI
6-month consequences of COVID-19 in patients discharged from hospital: a cohort study.
Chaolin Huang,Lixue Huang,Lixue Huang,Yeming Wang,Xia Li,Lili Ren,Xiaoying Gu,Xiaoying Gu,Liang Kang,Lili Guo,Min Liu,Xing Zhou,Jianfeng Luo,Zhenghui Huang,Shengjin Tu,Yue Zhao,Li Chen,Decui Xu,Yanping Li,Caihong Li,Lu Peng,Yong Mei Li,Wuxiang Xie,Dan Cui,Dan Cui,Lianhan Shang,Lianhan Shang,Guohui Fan,Guohui Fan,Jiuyang Xu,Geng Wang,Geng Wang,Ying Wang,Jingchuan Zhong,Chen Wang,Chen Wang,Jianwei Wang,Dingyu Zhang,Bin Cao +38 more
TL;DR: In this article, the authors describe the long-term health consequences of patients with COVID-19 who have been discharged from hospital and investigate the associated risk factors, in particular disease severity.
Journal ArticleDOI
Immunological memory to SARS-CoV-2 assessed for up to 8 months after infection.
Jennifer M. Dan,Jennifer M. Dan,Jose Mateus,Yu Kato,Kathryn M. Hastie,Esther Dawen Yu,Caterina E. Faliti,Alba Grifoni,Sydney I. Ramirez,Sydney I. Ramirez,Sonya Haupt,April Frazier,Catherine Nakao,Vamseedhar Rayaprolu,Stephen A. Rawlings,Bjoern Peters,Bjoern Peters,Florian Krammer,Viviana Simon,Erica Ollmann Saphire,Erica Ollmann Saphire,Davey M. Smith,Daniela Weiskopf,Alessandro Sette,Alessandro Sette,Shane Crotty,Shane Crotty +26 more
TL;DR: This article analyzed multiple compartments of circulating immune memory to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in 254 samples from 188 COVID-19 cases, including 43 samples at ≥ 6 months after infection.
Journal ArticleDOI
Robust T Cell Immunity in Convalescent Individuals with Asymptomatic or Mild COVID-19.
Takuya Sekine,André Perez-Potti,Olga Rivera-Ballesteros,Kristoffer Strålin,Jean Baptiste Gorin,Annika Olsson,Sian Llewellyn-Lacey,Habiba Kamal,Gordana Bogdanovic,Sandra Muschiol,David J. Wullimann,Tobias Kammann,Johanna Emgård,Tiphaine Parrot,Elin Folkesson,Olav Rooyackers,Lars Eriksson,Jan-Inge Henter,Anders Sönnerborg,Tobias Allander,Jan Albert,Morten Nielsen,Jonas Klingström,Sara Gredmark-Russ,Niklas K. Björkström,Johan K. Sandberg,David Price,Hans-Gustaf Ljunggren,Soo Aleman,Marcus Buggert +29 more
TL;DR: It is shown that SARS-CoV-2 elicits robust, broad and highly functional memory T cell responses, suggesting that natural exposure or infection may prevent recurrent episodes of severe COVID-19.
Journal ArticleDOI
Safety and Immunogenicity of SARS-CoV-2 mRNA-1273 Vaccine in Older Adults.
Evan J. Anderson,Nadine Rouphael,Alicia T. Widge,Lisa A. Jackson,Paul C. Roberts,Mamodikoe Makhene,James D. Chappell,Mark R. Denison,Laura J. Stevens,Andrea J. Pruijssers,Adrian B. McDermott,Britta Flach,Bob C. Lin,Nicole A. Doria-Rose,Sijy O'Dell,Stephen D. Schmidt,Kizzmekia S. Corbett,Phillip A. Swanson,Marcelino Padilla,Kathy M. Neuzil,Hamilton Bennett,Brett A. Leav,Mat Makowski,Jim Albert,Kaitlyn Cross,Venkata Viswanadh Edara,Katharine Floyd,Mehul S. Suthar,David R. Martinez,Ralph S. Baric,Wendy Buchanan,Catherine J. Luke,Varun K Phadke,Christina A. Rostad,Julie E. Ledgerwood,Barney S. Graham,John H. Beigel +36 more
TL;DR: The phase 1, dose-escalation, open-label trial of a messenger RNA vaccine, mRNA-1273, which encodes the stabilized prefusion SARS-CoV-2 spike protein in healthy adults found it induced higher binding- and neutralizing-antibody titers than the 25-μg dose, which supports the use of the 100- μg dose in a phase 3 vaccine trial.
References
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Journal ArticleDOI
Clinical course and risk factors for mortality of adult inpatients with COVID-19 in Wuhan, China: a retrospective cohort study.
Fei Zhou,Ting Yu,Ronghui Du,Guohui Fan,Ying Liu,Zhibo Liu,Jie Xiang,Yeming Wang,Bin Song,Xiaoying Gu,Xiaoying Gu,Lulu Guan,Yuan Wei,Li Hui,Xudong Wu,Jiuyang Xu,Shengjin Tu,Yi Zhang,Hua Chen,Bin Cao +19 more
TL;DR: Wang et al. as discussed by the authors used univariable and multivariable logistic regression methods to explore the risk factors associated with in-hospital death, including older age, high SOFA score and d-dimer greater than 1 μg/mL.
Journal ArticleDOI
Clinical Characteristics of 138 Hospitalized Patients With 2019 Novel Coronavirus-Infected Pneumonia in Wuhan, China.
Dawei Wang,Bo Hu,Chang Hu,Fangfang Zhu,Xing Liu,Jing Zhang,Binbin Wang,Hui Xiang,Zhenshun Cheng,Yong Xiong,Yan Zhao,Yirong Li,Xinghuan Wang,Zhiyong Peng +13 more
TL;DR: The epidemiological and clinical characteristics of novel coronavirus (2019-nCoV)-infected pneumonia in Wuhan, China, and hospital-associated transmission as the presumed mechanism of infection for affected health professionals and hospitalized patients are described.
Journal ArticleDOI
Epidemiological and clinical characteristics of 99 cases of 2019 novel coronavirus pneumonia in Wuhan, China: a descriptive study
Nanshan Chen,Min Zhou,Xuan Dong,Jie-Ming Qu,Fengyun Gong,Yang Han,Yang Qiu,Jingli Wang,Ying Liu,Yuan Wei,Jia'an Xia,Ting Yu,Xinxin Zhang,Li Zhang +13 more
TL;DR: Characteristics of patients who died were in line with the MuLBSTA score, an early warning model for predicting mortality in viral pneumonia, and further investigation is needed to explore the applicability of the Mu LBSTA scores in predicting the risk of mortality in 2019-nCoV infection.
Journal ArticleDOI
A familial cluster of pneumonia associated with the 2019 novel coronavirus indicating person-to-person transmission: a study of a family cluster.
Jasper Fuk-Woo Chan,Shuofeng Yuan,Kin-Hang Kok,Kelvin K. W. To,Kelvin K. W. To,Hin Chu,Jin Yang,Fanfan Xing,Jieling Liu,Cyril C. Y. Yip,Rosana W.S. Poon,Hoi Wah Tsoi,Simon Kam Fai Lo,Kwok-Hung Chan,Vincent Kwok-Man Poon,Wan Mui Chan,Jonathan Daniel Ip,Jian Piao Cai,Vincent C.C. Cheng,Honglin Chen,Honglin Chen,Christopher K.M. Hui,Kwok-Yung Yuen +22 more
TL;DR: The findings are consistent with person-to-person transmission of this novel coronavirus in hospital and family settings, and the reports of infected travellers in other geographical regions.
Journal ArticleDOI
Presumed Asymptomatic Carrier Transmission of COVID-19.
TL;DR: This study describes possible transmission of novel coronavirus disease 2019 (COVID-19) from an asymptomatic Wuhan resident to 5 family members in Anyang, a Chinese city in the neighboring province of Hubei.
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