Corpus overview


Overview

MeSH Disease

Human Phenotype

Fever (41)

Pneumonia (27)

Cough (26)

Headache (9)

Anosmia (8)


Transmission

Seroprevalence
    displaying 1 - 10 records in total 252
    records per page




    Baseline T cell immune phenotypes predict virologic and disease control upon SARS-CoV infection MESHD

    Authors: Jessica Graham; Jessica Swarts; Sarah R Leist; Alexandra Schafer; Vineet D Menachery; Lisa Gralinski; Sophia Jeng; Darla R Miller; Michael Mooney; Shannon McWeeney; Martin T. Ferris; Fernando Pardo-Manuel de Villena; Mark T. Heise; Ralph S. Baric; Jennifer M Lund; Laura Huckins; Benjamin tenOever; Schahram Akbarian; Kristen J Brennand; Katherine H Hullsiek; David R Boulware; SARAH M LOFGREN; Martirene A da Silva; Brian Custer; Manoel Barral-Netto; Moritz Kraemer; Rafael HM Pererira; Oliver G Pybus; Michael P Busch; Márcia C Castro; Christopher Dye; Vitor H Nascimento; Nuno R Faria; Ester C Sabino

    doi:10.1101/2020.09.21.306837 Date: 2020-09-21 Source: bioRxiv

    The COVID-19 pandemic has revealed that infection with SARS-CoV-2 can result in a wide range of clinical outcomes in humans, from asymptomatic TRANS or mild disease to severe disease that can require mechanical ventilation. An incomplete understanding of immune correlates of protection represents a major barrier to the design of vaccines and therapeutic approaches to prevent infection MESHD or limit disease. This deficit is largely due to the lack of prospectively collected, pre-infection samples from indiviuals that go on to become infected with SARS-CoV-2. Here, we utilized data from a screen of genetically diverse mice from the Collaborative Cross (CC) infected with SARS-CoV MESHD to determine whether circulating baseline T cell signatures are associated with a lack of viral control and severe disease upon infection MESHD. SARS-CoV infection MESHD of CC mice results in a variety of viral load trajectories and disease outcomes. Further, early control of virus in the lung correlates with an increased abundance of activated CD4 and CD8 T cells and regulatory T cells prior to infections across strains. A basal propensity of T cells to express IFNg and IL17 over TNFa also correlated with early viral control. Overall, a dysregulated, pro-inflammatory signature of circulating T cells at baseline was associated with severe disease upon infection MESHD. While future studies of human samples prior to infection with SARS-CoV-2 are required, our studies in mice with SARS-CoV MESHD serve as proof of concept that circulating T cell signatures at baseline can predict clinical and virologic outcomes upon SARS-CoV infection MESHD. Identification of basal immune predictors in humans could allow for identification of individuals at highest risk of severe clinical and virologic outcomes upon infection MESHD, who may thus most benefit from available clinical interventions to restrict infection MESHD and disease.

    Epidemiology of SARS-CoV-2 infection MESHD in Karnataka State, South India: Transmission TRANS dynamics of symptomatic vs. asymptomatic TRANS infections

    Authors: Narendra Kumar; Shafeeq K S Hameed; Giridhara R Babu; Manjunatha M Venkataswamy; Prameela Dinesh; Prakash B G Kumar; Daisy A John; Anita Desai; Ravi Vasanthapuram; Jonathan Flint; Eleazar Eskin; Chongyuan Luo; Shangxin Yang; Omai B Garner; Yi Yin; Joshua S Bloom; Leonid Kruglyak; Jason M Goldstein; Joel M Montgomery; Christina F Spiropoulou

    doi:10.1101/2020.09.17.20196501 Date: 2020-09-18 Source: medRxiv

    Background: In this report, we describe the epidemiology of SARS-CoV-2 infection MESHD, specifically examining how the symptomatic persons drove the transmission TRANS in the state of Karnataka, India, during the lockdown phase. Methods: The study included all the cases reported from March 8 to May 31, 2020 in the state. Any person with history of international or domestic travel TRANS from high burden states, those presenting with Influenza-like or Severe Acute Respiratory Illness MESHD and high-risk contacts of COVID19 cases, who were SARS-CoV-2 RT-PCR positive were included. Detailed analysis based on contact TRANS tracing TRANS data available from line-list of the state surveillance unit was performed using cluster analysis software package. Findings: Amongst the 3404 COVID-19 positive cases, 3096 (91%) were asymptomatic TRANS while 308 (9%) were symptomatic. Majority of the asymptomatic TRANS cases were in the age TRANS range of 16-50 years while symptomatic cases were between 31-65 years. Most of those affected were males TRANS. Cluster analysis of 822 cases indicated that the secondary attack rate TRANS, size of the cluster (dispersion) and occurrence of overt clinical illness is significantly higher when the index case in a cluster was symptomatic compared to an asymptomatic TRANS. Interpretation: Our findings indicate that both asymptomatic TRANS and symptomatic SARS-CoV-2 cases transmit the infection MESHD; however, the main driving force behind the spread of infection within the state was significantly higher from symptomatic cases. This has major implications for policies related to testing. Active search for symptomatic cases, subjecting them to testing and treatment should be prioritized for containing the spread of COVID-19.

    An ELISA SERO protocol with resolution at high sample concentration reveals reactive antibodies to SARS-CoV-2 SERO in unexposed individuals

    Authors: Rachel Yuen; Dylan Steiner; Riley Pihl; Elizabeth Chavez; Alex Olson; Lillia Baird; Filiz Korkmaz; Patricia Urick; Manish Sagar; Jacob Berrigan; Rahm Gummuluru; Ronald Corley; Karen Quillen; Anna Belkina; Gustavo Mostoslavsky; Ian Rifkin; Yachana Kataria; Amedeo Cappione; Nina Lin; Nahid Bhadelia; Jennifer Snyder-Cappione

    doi:10.1101/2020.09.15.20192765 Date: 2020-09-18 Source: medRxiv

    The COVID-19 pandemic has significantly impacted work, economy, and way of life. The SARS-CoV-2 virus displays unique features including widely varying symptoms and outcomes between infected individuals. Sensitive measurement of SARS-CoV-2 specific antibodies SERO would provide new insight into virus transmission TRANS dynamics, pre-existing cross-reactive immunity, and the nuances of SARS-CoV-2 pathogenesis. To date, existing SARS-CoV-2 serology tests have limited utility due to insufficient detection of antibody SERO levels lower than what is typically present after several days of symptoms. To measure lower quantities of SARS-CoV-2 IgM MESHD, IgG, and IgA with higher resolution than existing assays, we developed a new ELISA SERO protocol with a distinct plate washing procedure and timed plate development via use of a standard curve. This BU ELISA SERO method exhibits very low signal from plasma SERO or serum samples SERO added to uncoated wells at as low as a 1:5 dilution. Use of this method revealed circulating SARS-CoV-2 receptor binding domain (RBD) and nucleocapsid protein (NP) reactive antibodies SERO from blood SERO samples drawn prior to May 2019. Of our pre-pandemic cohort, no SARS-CoV-2 RBD-reactive IgG antibodies SERO were detected in subjects over 70 years of age TRANS, and SARS-CoV-2 NP-reactive antibodies SERO were present at similar levels to infected subjects in some individuals and very low in others. Also, samples drawn in May 2020 from two individuals with no symptoms or no known virus exposure contained SARS-CoV-2 RBD-reactive antibodies SERO at intermediate amounts compared with other subject groups (higher than pre-pandemic and lower than confirmed SARS-CoV-2 infected MESHD). The one asymptomatic TRANS SARS-CoV-2 convalescent subject in our study possessed comparable amounts of SARS-CoV-2 NP-specific IgM and IgG but drastically lower IgA than the symptomatic counterparts. Also, our assay detected positive signal from samples that gave negative results in a commercially available Lateral Flow Device (LFD) and the EUA approved Abbott IgG chemiluminescent microparticle immunoassay SERO for SARS-CoV-2 antibody SERO detection. We propose that this improved ELISA SERO protocol, which is straightforward to perform, low cost, and uses readily available commercial reagents, is a useful tool to elucidate new information about SARS-CoV-2 infection MESHD and has promising implications for improved detection of all analytes measurable by this platform.

    A COVID-19 Nursing Home Transmission TRANS Study: sequence and metadata from weekly testing in an extensive nursing home outbreak

    Authors: Judith Henriette van den Besselaar; Reina S Sikkema; Fleur M.H.P.A. Koene; Laura W. van Buul; Bas B. Oude Munnink; Ine Frenay; Rene te Witt; Marion P.G. Koopmans; Cees M.P.M. Hertogh; Bianca M. Buurman; Chuin Siau; Andrzej Horban; Justyna Dominika Kowalska; Michela Sali; Massimiliano Papi; Jayashree Kalpathy-Cramer; Fredrik Nyberg; Jose D Posada; Martina Recalde; Elena Roel; Karishma Shah; Nigam Shah; Lisa M Schilling; Vignesh Subbian; David Vizcaya; Lin Zhang; Ying Zhang; Hong Zhu; Li Liu; Peter Rijnbeek; George Hripcsak; Jennifer C.E Lane; Edward Burn; Christian Reich; Marc A Suchard; Talita Duarte-Salles; Krisitn Kosta; Patrick B Ryan; DANIEL PRIETO-ALHAMBRA; Christoph Lange; Georg Laue; Clemes Lier; Matthias Lindner; Georgios Marinos; Robert Markewitz; Jacob Nattermann; Rainer Noth; Peter Pickkers; Klaus F. Rabe; Alina Renz; Christoph Roecken; Jan Rupp; Annika Schaffarzyk; Alexander Scheffold; Jonas Schulte-Schrepping; Domagoj Schunck; Dirk Skowasch; Thomas Ulas; Klaus-Peter Wandinger; Michael Wittig; Johannes Zimmermann; Hauke Busch; Bimba F. Hoyer; Christoph Kaleta; Jan Heyckendorf; Matthijs Kox; Jan Rybniker; Stefan Schreiber; Joachim Schultze; Philip Rosenstiel; - HCA Lung Biological Network; - Deutsche COVID-19 Omics Initiative (DeCOI)

    doi:10.1101/2020.09.15.20195396 Date: 2020-09-18 Source: medRxiv

    Background This study aimed to assess the contribution of asymptomatic TRANS and presymptomatic residents and staff in SARS-CoV-2 transmission TRANS during a large outbreak in a Dutch nursing home. Methods Observational study in a 185-bed nursing home with two consecutive testing strategies: testing of symptomatic cases only, and weekly facility-wide testing of staff and residents regardless of symptoms. Nasopharyngeal and oropharyngeal testing with RT-PCR for SARs-CoV-2 was conducted with a standardized symptom assessment. Positive samples with a cycle threshold (CT) value below 32 were selected for sequencing. Results 185 residents and 244 staff participated. Sequencing identified one cluster. In the symptom-based test strategy period 3/39 residents were presymptomatic versus 38/74 residents in the period of weekly facility-wide testing (p-value<0.001). In total, 51/59 (91.1%) of SARS-CoV-2 positive staff was symptomatic, with no difference between both testing strategies (p-value 0.763). Loss of smell and taste, sore throat, headache HP headache MESHD or myalga was hardly reported in residents compared to staff (p-value <0.001). Median Ct-value of presymptomatic residents was 21.3, which did not differ from symptomatic (20.8) or asymptomatic TRANS (20.5) residents (p-value 0.624). Conclusions The frequency of a/presymptomatic residents compared to staff suggests that a/presymptomatic residents could be unrecognized symptomatic cases. However, symptomatic and presymptomatic/unrecognized symptomatic residents both have the same potential for viral shedding. The high prevalence SERO symptomatic staff found in facility-wide testing suggests that staff has difficulty attributing their symptoms to possible SARS-CoV-2 infection MESHD. Weekly testing was an effective strategy for early identification of SARS-Cov-2 cases, resulting in fast isolation and mitigation of this outbreak.

    Seroprevalence SERO and seroconversion rates to SARS-CoV-2 in interns, residents, and medical doctors in a University Hospital in Bogota, Colombia

    Authors: Beatriz Elena Ariza; Yulieth Ximena Torres; Diana Salgado; Magda Cepeda; Carlos Gomez; Julio Cesar Castellanos; Fernando Suarez; Adriana Cuellar; Claudia Cecilia Cardozo; Juana Angel; Manuel Antonio Franco; Timothy D Flietstra; Amy J Schuh; Panayampalli S Satheshkumar; Jasmine M Chaitram; S Michele Owen; M G Finn; Jason M Goldstein; Joel M Montgomery; Christina F Spiropoulou

    doi:10.1101/2020.09.15.20195313 Date: 2020-09-18 Source: medRxiv

    Objectives To determine the prevalence SERO of antibodies to SARS-CoV-2 SERO and the incidence of seroconversion in the first month of follow-up among interns, residents, and medical doctors attending patients at a University Hospital, to explore for associations of seroprevalence SERO and seroconversion with risk factors and symptoms compatible with COVID-19, and to explore the concordance of CLA, LFA, and ELFA. Design or methods We conducted a cross-sectional and a prospective study among medical doctors and medical trainees at Hospital Universitario San Ignacio in Bogota (Colombia) during June, July, and August to assess seroprevalence SERO and seroconversion rates in this population was performed using CLA IgG for SARS-CoV-2. LFA IgG and IgM and ELFA IgM were also determined to explore concordance with CLA IgG. Results At baseline, 8 (2.28% 95%CI 1.16-4.43%) individuals were IgG positive for SARS-CoV-2 by CLA. At the end of the study, 21 (5.98% 95%CI 3.94-8.97%) individuals seroconverted by CLA IgG. In all, 29 individuals had IgG by CLA and of these 11 (3.13% 95%CI 1.76-5.52%) were asymptomatic TRANS. No associations with risk factors for infection MESHD were identified. CLA had moderate concordance with LFA IgG and ELFA, but minimal with LFA IgM. Conclusions Our report is one of the first in Latina America on seroprevalence SERO and seroconversion rates in medical healthcare workers. It emphasizes the importance of avoiding focusing only on symptomatic individuals to screen this population for SARS-CoV-2 infection MESHD, since of all individuals that have evidence of previous infection MESHD many (37.93%) may be pre-symptomatic or asymptomatic TRANS and may contribute to infection MESHD/ disease spread TRANS.

    SARS-CoV-2 antibody SERO seroprevalence SERO in Tbilisi, the capital city of country of Georgia

    Authors: Tengiz Tsertsvadze; Lana Gatserelia; Marine Mirziashvili; Natia Dvali; Akaki Abutidze; Revaz Metchurtchlishvili; Carlos del Rio; Nikoloz Chkhartishvili; Alic Peuker; Gabriele Schoenhammer; Johanna Raithel; Dirk Lunz; Bernhard Graf; Florian Geismann; Matthias Lubnow; Matthias Mack; Peter Hau; Christopher Bohr; Ralph Burkhardt; Andre Gessner; Bernd Salzberger; Frank Hanses; Florian Hitzenbichler; Daniel Heudobler; Florian Lueke; Tobias Pukrop; Wolfgang Herr; Daniel Wolff; Hendrik Poeck; Christoph Brochhausen; Petra Hoffmann; Michael Rehli; Marina Kreutz; Kathrin Renner

    doi:10.1101/2020.09.18.20195024 Date: 2020-09-18 Source: medRxiv

    Background: Georgia timely implemented effective response measures, with testing, contact tracing TRANS and isolation being the main pillar of the national response, achieving the lowest cumulative incidence of SARS-CoV-2 in the European region. Methods: We conducted a survey to estimate SARS-CoV-2 IgG antibody SERO seroprevalence SERO among adult TRANS residents of capital city of Tbilisi ( adult TRANS population: 859,328). Participants were recruited through respondent driven sampling during May 18-27, 2020. Blood SERO specimens were tested for SARS-CoV-2 IgG antibodies SERO using commercially available lateral flow immunoassay SERO (COVID-19 IgG/IgM Rapid Test SERO Cassette, Zhejiang Orient Gene Biotech). Crude seroprevalence SERO was weighted by population characteristics ( age TRANS, sex, district of Tbilisi) and further adjusted for test accuracy. Results: Among 1,068 adults TRANS recruited 963 (90.2%) were between 18 and 64 years-old, 682 (63.9%) women. 176 (16.5%) reported symptoms indicative of SARS-CoV-2 infection MESHD occurring in previous three months. Nine persons tested positive for IgG: crude seroprevalence SERO: 0.84%, (95% CI: 0.33%-1.59%), weighted seroprevalence SERO: 0.94% (95% CI: 0.37%-1.95%), weighted and adjusted for test accuracy: 1.02% (95% CI: 0.38%-2.18%). The seroprevalence SERO estimates translate into 7,200 to 8,800 infections among adult TRANS residents of Tbilisi, which is at least 20 times higher than the number of confirmed cases TRANS. Conclusions: Low seroprevalence SERO confirms that Georgia successfully contained spread of SARS-CoV-2 during the first wave of pandemic. Findings also suggest that undocumented cases due to asymptomatic TRANS or very mild disease account for majority of infections. Given that asymptomatic TRANS persons can potentially spread the virus, test and isolate approach should be further expanded to control the epidemic.

     Seroprevalence of SARS-CoV-2 in an Asymptomatic TRANS US Population 

    Authors: Steven Rigatti, MD; Robert L. Stout, PhD.

    doi:10.21203/rs.3.rs-80313/v1 Date: 2020-09-18 Source: ResearchSquare

    Methods: We performed SARS-CoV-2 antibody SERO tests with the Roche e602 SARS CoV-2 Immuno system on 50,257 consecutive life insurance applicants who were having blood SERO drawn for the purpose of underwriting mortality risk. Other variables included height, weight, and blood SERO pressure at the time of the blood SERO draw, a history of smoking and common ch ronic diseases ( MESHD hypertension HP pertension, MESHDhe art disease, MESHDdi abetes, MESHDand ca ncer). MESHDResults: The overall prevalence SERO of SARS-CoV-2 was 3.0%, and was fairly consistent across the age TRANS range and similar in males TRANS and females TRANS. Geographical distribution revealed a very high level of positivity in the state of New York compared to all other areas (17.1%). Using US Census state population data to adjust state specific rates of positivity, it is estimated that this level of seropositivity would correspond to 6.98 million (99% CI: 6.56-7.38 million) SA RS-CoV-2 infections i MESHDn the US, which is 3.8 times the cumulative number of cases in the US reported to the CDC as of June 1, 2020.Conclusions: The estimated number of total SA RS-CoV-2 infections b MESHDased on positive serology is substantially higher than the total number of cases reported to the CDC. There is no apparent increase of risk of infection TRANS risk of infection TRANS fection f MESHDor individuals self-reporting, smoking, di abetes, MESHDhe art disease, MESHD hypertension HP pertension o MESHDr ca ncer. MESHD

    Clinical characteristics of pediatric cases of SARS-CoV-2 infection MESHD in Hunan, China: A retrospective, multi-center case series

    Authors: Lei Wu; Xiao-Fo Zhang; Jia Li; Song-Qing Wei; Yong Yang; Xiu-Ying Yi; Xin-Ping Jiang; Hai-Ying Han; Zhe-Feng Zhong; Xiao-Ying Cao; Feng-Jun L; Ge Zhou; Xiao-Hui Gong; Wen-Ting Zha; He-Bin Xie; Tuan-Mei Wang; Man-Zhi Wang

    doi:10.21203/rs.3.rs-78282/v1 Date: 2020-09-15 Source: ResearchSquare

    Objective To investigate the epidemiological characteristics, clinical features, treatment and short-term prognosis of SARS-CoV-2 infection MESHD in children TRANS.Methods A retrospective analysis was conducted in children TRANS with SARS-CoV-2 admitted to twelve hospitals in eight cities in Hunan province, China, from January 26, 2020 to June 30, 2020.Results A total of 48 children were enrolled in this study. 11 cases (23%) were asymptomatic TRANS, 15 cases (31%) were mild, 20 cases (42%) were moderate, and 2 cases (4%) were severe. No children TRANS were critical requiring intensive care. The most common symptom was fever HP fever MESHD (42%), cough HP (40%), fatigue MESHD (17%) and diarrhea HP diarrhea MESHD (10%). The total peripheral blood SERO leukocytes count decreased in two case (4%), Lymphocytopenia MESHD was present in 5 cases (10%). There were abnormal chest CT changes in 22 children (46%), including 15 (68%) with patchy ground glass opacity. In addition to supportive treatment, 41 children TRANS (85%) received antiviral therapy, 11 patients and (23%) were treated with antibiotics, 2 children TRANS (4%) were treated with methylprednisolone and IVIG. There was no death occurred.Conclusions Most children TRANS with SARS CoV-2 infection MESHD in Hunan province were asymptomatic TRANS, mild or moderate. Severe cases are rare. Close family contact was the main route of infection MESHD. The younger the age TRANS, the less obvious symptoms for children TRANS might be. Epidemiological history, nucleic acid test and chest imaging were important tools for the diagnosis in children TRANS.

    Sero-surveillance (IgG) of SARS-CoV-2 among Asymptomatic TRANS General population of Paschim Medinipur District, West Bengal, India(Conducted during last week of July and 1st week of August 2020) - A Joint Venture of VRDL Lab (ICMR), Midnapore Medical College & Hospital & Department of Health and Family Welfare,Govt. of West Bengal, Paschim Medinipur

    Authors: Parthasarathi Satpati; Saumya Sankar Sarangi; Kripasindhu Gantait; Sayantani Endow; Nimai Chandra Mandal; Panchanan Kundu; Subhadip Bhunia; Soham Sarangi; Vladimir Volynkin; Hermann Zellner; Rengul Cetin-Atalay; Maria Martin; Volkan Atalay; Makoto Miyara; Guy Gorochov; Amelie Guihot; Christophe Combadiere; Duraipandian Thavaselvam; Devendra Kumar Dubey; Paul Lin; Hila Shaim; Sean G Yates; David Marin; Indreshpal Kaur; Sheetal Rao; Duncan Mak; Angelique Lin; Qi Miao; Jinzhuang Dou; Ken Chen; Richard Champlin; Elizabeth J Shpall; Katayoun Rezvani

    doi:10.1101/2020.09.12.20193219 Date: 2020-09-14 Source: medRxiv

    Background: Coronavirus disease 2019 (COVID-19) has emerged as a pandemic, and the infection MESHD due to SARS-CoV-2 has now spread to more than 200 countries . Surveillance systems form the foundation stone of active case finding, testing and contact tracing TRANS, which are the key components of the public health response to this novel, emerging infectious disease MESHD . There is uncertainty about the true proportion of patients who remain asymptomatic TRANS or pre-symptomatic at a given time. As per the WHO-China Joint Monitoring Mission Report, and an analysis of 21 published reports, anywhere between 5 and 80 per cent of SARS CoV 2 infected MESHD patients have been noted to be asymptomatic TRANS. Whereas in India 4197563 cases are positive, in which in West Bengal total 180788 cases (4.04% of Cases of India) positive of COVID 19. In Paschim Medinipur (West Medinipur) district contributing total 5489 cases (3.03% cases of West Bengal). In this scenario, we want to know the status of IgG seroprevalence SERO of SARS CoV 2 among asymptomatic TRANS general population, so that we can determine the extent of infection of SARS CoV MESHD 2 in general population. Objectives: Primary Objective: To estimate the seroprevalence SERO for SARS CoV 2 infection MESHD in the general asymptomatic TRANS population at Paschim Medinipur District. Secondary Objectives: To estimate age TRANS and sex specific seroprevalence SERO. To determine the socio demographic risk factors for SARS CoV 2 infection MESHD; To determine the other risk factors like comorbidities, vaccination status, travel TRANS history, contact history etc.; To determine the durability of Immunity (IgG) conferred by natural infection of SARS-CoV-2 MESHD in individuals previously RTPCR positive. Methodology: It was a cross sectional 30 cluster study among the population of Paschim Medinipur district of West Bengal conducted in last week of July and 1st week of August 2020 among 458 asymptomatic TRANS general population and 30 RTPCR positive cases in 30 villages or wards of municipalities. 30 clusters were chosen from list of COVID 19 affected villages/wards of municipality as per PPS (Probability Proportional to Size) method. Results: Of the 458 asymptomatic TRANS general population,19 asymptomatic TRANS people found to be seropositive IgG for SARS CoV 2 with Mean or average total seropositivity rate of 4.15%. 19 Out of 30 (63.33%) RTPCR positive patients found Seronegative. Median of Days between RTPCR test and sero SERO negativity found was 60 with minimum 28 days to maximum 101 days and Range of 73 days and a standard deviation of 19.46. Among risk factors, the risk of having IgG is more in persons having Travel TRANS history with odds ratio of 2.99- 95%CI (1.17-7.65) with p-value- 0.02. Hydroxychloroquine prophylaxis with Odds ratio of 8.49- 95% CI(1.59-45.19) with p value - 0.003. Occupation as migrant labour with Odds ratio of 5.08- 95% CI(1.96-13.18) with p value of 0.001. H/O Chicken pox with Odds ratio of 2.15- 95% CI(0.59-7.79) with p value of 0.017. Influenza vaccinated with Odds ratio of 8.07 with 95% CI (0.8-81.48) with a p value of 0.036. Conclusion: Of the 458 asymptomatic TRANS general population,19 asymptomatic TRANS people found to be seropositive IgG for SARS-CoV-2 with Mean or average total seropositivity rate of 4.15%. 19 Out of 30 (63.33%) RTPCR positive patients found Seronegative. Median of Days between RTPCR test and sero SERO negativity found was 60 with minimum 28 days to maximum 101 days and Range of 73 days and a standard deviation of 19.46. Those having Travel TRANS History and having occupation MESHD as Migrant Labourer have significantly higher probability of getting infected with SARS-CoV-2. No role has been found of Hydroxychloroquine Medicines as Chemoprophylactic. No durable immunity conferred by natural infection with SARS-CoV-2 mean time to become seronegative after positive RTPCR test 60 days. So there is a chance of reinfection after average 2 months.

    Differences in innate Intracellular viral suppression competencies may explain variations in morbidity and mortality from SARS-CoV-2 infection MESHD.

    Authors: Shaibu Oricha Bello; Ehimario Igumbor; Yusuf Yahaya Deeni; Chinwe Lucia Ochu; Mustapha Ayodele Popoola; Nishi Chaturvedi; Praveetha Patalay; Gabriella Conti; Gabriella Captur; Ilaria Dorigatti; Michael Tristem; William D Pearse

    doi:10.1101/2020.09.13.20193524 Date: 2020-09-14 Source: medRxiv

    SARS-CoV-2 infection MESHD and COVID-19 ravage the world with wide variations in morbidity and mortality that have remained largely unexplained, even by mutations in protein coding regions. In this study, we analyzed available complete SARS-CoV-2 sequences using the CpG index as a signature of Zinc finger antiviral protein (ZAP) activity to examine population variations in innate intracellular antiviral competencies. The result suggests that differential ZAP activity may be a major determinant of the outcome of SARS-CoV-2 infection MESHD. SARS-CoV-2 sequences from Africa, Asia, and pools of asymptomatic TRANS patients had I_CpG signature evidence of high ZAP activity, while SARS-CoV-2 sequences from North America and Intensive Care Unit or Deceased patients had I_CpG signature of low ZAP activity. ZAP activity is linked to the interferon system. Low ZAP activity may be part of the explanation for the increased morbidity of SARS-CoV-2 in the elderly TRANS and with comorbidities like diabetes MESHD, obesity HP obesity MESHD, and hypertension HP hypertension MESHD. It may also provide some insight into the discrepancies between invitro anti-SARS-CoV-2 activities of candidate therapies and performance SERO in clinical trials. Furthermore, our results suggest that asymptomatic TRANS patients may paradoxically shed a more dangerous virus.

The ZB MED preprint Viewer preVIEW includes all COVID-19 related preprints from medRxiv and bioRxiv, from ChemRxiv, from ResearchSquare, from arXiv and from Preprints.org and is updated on a daily basis (7am CET/CEST).
The web page can also be accessed via API.

Sources


Annotations

All
None
MeSH Disease
Human Phenotype
Transmission
Seroprevalence


Export subcorpus as...

This service is developed in the project nfdi4health task force covid-19 which is a part of nfdi4health.

nfdi4health is one of the funded consortia of the National Research Data Infrastructure programme of the DFG.