Corpus overview


Overview

MeSH Disease

Cough (537)

Fever (437)

Infections (260)

Disease (258)

Coronavirus Infections (181)


Human Phenotype

Cough (537)

Fever (437)

Fatigue (152)

Pneumonia (134)

Dyspnea (85)


Transmission

Seroprevalence
    displaying 11 - 20 records in total 537
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    Early clinical characteristics of Covid-19: scoping review

    Authors: Lakshmi Manoharan; Jonathan W S Cattrall; Carlyn Harris; Katherine Newell; Blake Thomson; Mark G Pritchard; Peter G Bannister; Louise Sigfrid; Tom Solomon; Peter W Horby; Gail Carson; Piero L Olliaro

    doi:10.1101/2020.07.31.20165738 Date: 2020-08-04 Source: medRxiv

    ABSTRACT Background: The Coronavirus disease MESHD 2019 (covid-19) pandemic has spread rapidly across the globe. Accurate clinical characterisation studies are essential to informing research, diagnosis and clinical management efforts, particularly early in a pandemic. In this scoping review we identify the clinical characteristics of patients admitted to hospital in the early months of the pandemic, focusing on symptoms, laboratory and imaging findings, and clinical outcomes. Methods: A scoping review. MEDLINE, EMBASE and Global Health databases were searched studies published from January 1st 2020 to April 28th 2020. Studies which reported on at least 100 hospitalised patients with covid-19 of any age TRANS were included. Results: Of 1,249 studies identified through the search 78 studies were eligible for inclusion; one randomized control trial and 77 observational studies presenting data on 77,443 patients admitted with covid-19. Most studies were conducted in China (82%), 9% in the US and 10% in Europe and two studies were set in more than one country. No studies included patients from low and middle income countries. Coagulopathy was underrecognised as a complication in the early months of the pandemic. Use of corticosteroids varied widely, and the use of anticoagulants was reported in only one study. Fever MESHD Fever HP, cough MESHD cough HP and dyspnoea are less common in older adults TRANS; gastrointestinal symptoms, as the only presenting feature may be underrecognised. The most common laboratory finding was lymphocytopenia. Inflammatory biomarkers were commonly elevated, including C-reactive protein and interleukin-6. Typical computed tomography findings include bilateral infiltrates however imaging may be normal in early disease MESHD. Data on clinical characteristics in children TRANS and vulnerable populations were limited. Conclusions: Clinical characterisation studies from early in the pandemic indicated that covid-19 is a multisystem disease MESHD, with biomarkers indicating inflammation MESHD and coagulopathy. However, early data collection on symptoms and clinical outcomes did not consistently reflect this wide spectrum. Corticosteroid use varied widely, and anticoagulants were rarely used. Clinicians should remain vigilant to the possibility of covid-19 in patients presenting without fever MESHD fever HP, cough MESHD cough HP and dyspnoea, particularly in older adults TRANS. Further characterisation studies in different at-risk populations is needed. Review registration: Available at https://osf.io/r2ch9 Keywords: Covid-19, clinical characteristics, symptoms, biochemical parameters, imaging, outcomes, pandemic research

    Risk stratification as a tool to rationalize quarantine among health care workers exposed to COVID-19 cases - Evidence from a tertiary healthcare centre in India

    Authors: Ravneet Kaur; Shashi Kant; Mohan Bairwa; Arvind Kumar; Shivram Dhakad; Vignesh Dwarakanathan; Aftab Ahmad; Pooja Pandey; Arti Kapil; Rakesh Lodha; Naveet Wig

    doi:10.1101/2020.07.31.20166264 Date: 2020-08-04 Source: medRxiv

    Background: Quarantine of healthcare workers (HCWs) exposed to COVID 19 confirmed cases TRANS is a well known strategy for limiting the transmission TRANS of infection MESHD. However, there is a need for evidence-based guidelines for the quarantine of HCWs in COVID 19. Methods: We describe our experience of contact tracing TRANS and risk stratification of 3853 HCWs who were exposed to confirmed COVID-19 cases in a tertiary health care institution in India. We developed an algorithm, on the basis of risk stratification, to rationalize quarantine among HCWs. Risk stratification was based on the duration of exposure, distance from the patient, and appropriateness of personal protection equipment (PPE) usage. Only high-risk contacts were quarantined for 14 days. They underwent testing for COVID 19 after five days of exposure, while low risk contacts continued their work with adherence to physical distancing, hand hygiene, and appropriate use of PPE. The low-risk contacts were encouraged to monitor for symptoms and report for COVID 19 screening if fever MESHD fever HP, cough MESHD cough HP, or shortness of breath occurred. We followed up all contacts for 14 days from the last exposure and observed for symptoms of COVID 19 and test positivity. Results and interpretation: Out of total 3853 contacts, 560 (14.5%) were categorized as high-risk contacts, and 40 of them were detected positive for COVID 19, with a test positivity rate of 7.1% (95% CI = 5.2, 9.6). Overall, 118 (3.1%) of all contacts tested positive. Our strategy prevented 3215 HCWs from being quarantined and saved 45,010 person-days of health workforce until June 8, 2020, in the institution. We conclude that exposure-based risk stratification and quarantine of HCWs is a viable strategy to prevent unnecessary quarantine, in a healthcare institution.

    COVID-19 Vaccine Candidates by Identification of B and T Cell Multi-Epitopes Against SARS-COV-2

    Authors: Suresh Kumar; Sarmilah Mathavan; Wee Jia Jin; Nur Azznira Bt Azman; Devindren Subramanaiam; Nur Afiqah Binti Zainalabidin; Dhivashini Lingadaran; Zainah Binti Abdul Sattar; Danniya Lakshmi Manickam; Priscilla Sheba Anbananthan; Johan Ahmad Taqiyuddin; Yuvapriya Thevarajan

    id:10.20944/preprints202008.0092.v1 Date: 2020-08-04 Source: Preprints.org

    Coronavirus disease MESHD (COVID-19) is a new discovered strain where WHO officially declares the disease MESHD as COVID-19 while the virus responsible for it called Severe Acute Respiratory Syndrome MESHD Coronavirus 2 or SARS-CoV-2. The incubation period TRANS of this disease MESHD is between 14 days. Ordinary clinical symptoms that reported around the world include fever MESHD fever HP, cough MESHD cough HP, fatigue MESHD fatigue HP, diarrhoea and vomiting MESHD vomiting HP as well as asymptomatic TRANS for certain people. Infection MESHD is spread mainly through broad droplets. In early March 2020, WHO again has announced that COVID-19 is a pandemic with currently no specific treatment. The potential use of SARS-COV-2 proteome as a vaccine candidate by analysing through B-cell and T-cell antigenicity by using a immunoinformatics approach as a vaccine development early stage. In this study, we used consensus sequence for SARS-COV-2 proteome that was retrieved from NCBI database. VaxiJen 2.0 was mainly used to identify the antigenic property of SARS-COV-2 proteins. IEDB then used to analyse the B-cell epitope, the presence of T cell immunogenic epitope in SARS-COV-2 proteins was obtained by using compromise method of MHC class I and II tools that accessible respectively using ProPred-1 server and MHC II Binding Prediction in IEDB database. The best epitopes of B and T-cell epitopes were predicted with high antigencity and the information is disseminated through web-based database resource (https://covid-19.omicstutorials.com/epitopes/). This study will be useful to find a new epitope-based candidate for SARS-COV-2. However, further study needs to be done for the next stages of vaccine development.

    Outcome of COVID-19 with co-existing surgical emergencies MESHD in children TRANS: our initial experiences and recommendations

    Authors: Md Samiul Hasan; Md Ayub Ali; Umama Huq

    doi:10.1101/2020.08.01.20166371 Date: 2020-08-04 Source: medRxiv

    Background: COVID 19 has changed the practice of surgery vividly all over the world. Pediatric surgery is not an exception. Prioritization protocols allowing us to provide emergency MESHD surgical care to the children TRANS in need while controlling the pandemic spread. The aim of this study is to share our experiences with the outcome of children TRANS with COVID 19 who had a co existing surgical emergency MESHD. Methods: This is a retrospective observational study. We reviewed the epidemiological, clinical, and laboratory data of all patients admitted in our surgery department through the emergency MESHD department and later diagnosed to have COVID 19 by RT PCR. The study duration was 3 months (April 2020 to June 2020). A nasopharyngeal swab was taken from all patients irrespective of symptoms to detect SARS CoV 2 by RT PCR with the purpose of detecting asymptomatic TRANS patients and patients with atypical symptoms. Emergency MESHD surgical services were provided immediately without delay and patients with positive test results were isolated according to the hospital protocol. We divided the test positive patients into 4 age groups TRANS for the convenience of data analysis. Data were retrieved from hospital records and analyzed using SPSS (version 25) software. Ethical permission was taken from the hospital ethical review board. Results: Total patients were 32. Seven (21.9%) of them were neonates. Twenty four (75%) patients were male TRANS. The predominant diagnosis was acute abdomen MESHD followed by infantile hypertrophic pyloric stenosis MESHD pyloric stenosis HP (IHPS), myelomeningocele HP, and intussusception MESHD intussusception HP. Only two patients had mild respiratory symptoms (dry cough MESHD cough HP). Fever MESHD Fever HP was present in 13 (40.6%) patients. Fourteen (43.8%) patients required surgical treatment. The mean duration of hospital stay was 5.5 days. One neonate with ARM died in the postoperative ward due to cardiac arrest HP. No patient had hypoxemia HP or organ failure. Seven health care workers (5.51%) including doctors & nurses got infected with SARS Co V2 during this period. Conclusion: Our study has revealed a milder course of COVID 19 in children TRANS with minimal infectivity even when present in association with emergency MESHD surgical conditions. This might encourage a gradual restart to mitigate the impact of COVID 19 on children TRANS surgery. Keywords: COVID 19, COVID 19 in children TRANS, Children TRANS Surgery, Surgical emergency MESHD, Surgery in COVID 19 positive patients.

    SARS-CoV-2 Seroprevalence SERO Across a Diverse Cohort of Healthcare Workers

    Authors: Joseph Ebinger; Gregory J. Botwin; Christine M. Albert; Mona Alotaibi; Moshe Arditi; Anders H. Berg; Aleksandra Binek; Patrick G. Botting; Justyna Fert-Bober; Jane C. Figueiredo; Jonathan D. Grein; Wohaib Hasan; Mir Henglin; Shehnaz K. Hussain; Mohit Jain; Sandy Joung; Michael Karin; Elizabeth H Kim; Dalin Li; Yunxian Liu; Eric Luong; Dermot P.B. McGovern; Akil Merchant; Noah M. Merin; Peggy B. Miles; Margo Minissian; Trevor-Trung Nguyen; Koen Raedschelders; Mohamad A. Rashid; Celine E. Riera; Richard V. Riggs; Sonia Sharma; Sarah Sternbach; Nancy Sun; Warren G. Tourtellotte; Jennifer E. Van Eyk; Kimia Sobhani; Jonathan G. Braun; Susan Cheng

    doi:10.1101/2020.07.31.20163055 Date: 2020-08-04 Source: medRxiv

    Importance: Antibody testing SERO is important for understanding patterns of exposure and potential immunity to SARS-CoV-2. Prior data on seroprevalence SERO have been subject to variations in selection of individuals and nature as well as timing of testing in relation to exposures. Objective: We sought to determine the extent of SARS-CoV-2 seroprevalance and the factors associated with seroprevelance across a diverse cohort of healthcare workers. Design: Observational cohort study of healthcare workers, including SARS-CoV-2 serology testing and participant questionaires. Participants: A diverse and unselected population of adults TRANS (n=6,062) employed in a multi-site healthcare delivery system located in Los Angeles County, including individuals with direct patient contact and others with non-patient-oriented work functions. Exposure: Exposure and infection MESHD with the SARS-CoV-2 virus, as determined by seropositivity. Main Outcomes: Using Bayesian and multi-variate analyses, we estimated seroprevalence SERO and factors associated with seropositivity and antibody SERO titers, including pre-existing demographic and clinical characteristics; potential Covid-19 illness related exposures; and, symptoms consistent with Covid-19 infection MESHD. Results: We observed a seroprevalence SERO rate of 4.1%, with anosmia HP as the most prominently associated self-reported symptom in addition to fever MESHD fever HP, dry cough MESHD cough HP, anorexia MESHD anorexia HP, and myalgias MESHD myalgias HP. After adjusting for potential confounders, pre-existing medical conditions were not associated with antibody SERO positivity. However, seroprevalence SERO was associated with younger age TRANS, Hispanic ethnicity, and African-American race, as well as presence of either a personal or household member having a prior diagnosis of Covid-19. Importantly, African American race and Hispanic ethnicity were associated with antibody SERO positivity even after adjusting for personal Covid-19 diagnosis status, suggesting the contribution of unmeasured structural or societally factors. Notably, number of people, or children TRANS, in the home was not associated with antibody SERO positivity. Conclusion and Relevance: The demographic factors associated with SARS-CoV-2 seroprevalence SERO among our healthcare workers underscore the importance of exposure sources beyond the workplace. The size and diversity of our study population, combined with robust survey and modeling techniques, provide a vibrant picture of the demographic factors, exposures, and symptoms that can identify individuals with susceptibility as well as potential to mount an immune response to Covid-19.

    Extended lifetime of respiratory droplets in a turbulent vapour puff and its implications on airborne disease MESHD transmission TRANS

    Authors: Kai Leong Chong; Chong Shen Ng; Naoki Hori; Rui Yang; Roberto Verzicco; Detlef Lohse

    id:2008.01841v1 Date: 2020-08-04 Source: arXiv

    To mitigate the COVID-19 pandemic, it is key to slow down the spreading of the life-threatening coronavirus (SARS-CoV-2). This spreading mainly occurs through virus-laden droplets expelled at speaking, coughing MESHD coughing HP, sneezing MESHD sneezing HP, or even breathing. To reduce infections MESHD through such respiratory droplets, authorities all over the world have introduced the so-called "2-meter distance rule" or "6-foot rule". However, there is increasing empirical evidence, e.g. through the analysis of super-spreading events, that airborne transmission TRANS of the coronavirus over much larger distances plays a major role with tremendous implications for the risk assessment of coronavirus transmission TRANS. Here we employ direct numerical simulations of a typical respiratory aerosol in a turbulent jet of the respiratory event within a Lagrangian-Eulerian approach with 5000 droplets, coupled to the ambient velocity, temperature, and humidity fields to allow for exchange of mass and heat and to realistically account for the droplet evaporation under different ambient conditions. We found that for an ambient relative humidity RH of 50% the lifetime of the smallest droplets of our study with initial diameter of 10 um gets extended by a factor of more than 30 as compared to what is suggested by the classical picture of Wells, due to collective effects during droplet evaporation and the role of the respiratory humidity, while the larger droplets basically behave ballistically. With increasing ambient RH the extension of the lifetimes of the small droplets further increases and goes up to 150 times for 90% RH, implying more than two meters advection range of the respiratory droplets within one second. Smaller droplets live even longer and travel TRANS further. Our results may explain why COVID-19 superspreading events can occur for large ambient RH such as in cooled-down meat-processing plants or in pubs with poor ventilation.

    Clinical Course and Management of 73 Hospitalized Moderate Patients with COVID-19 Outside Wuhan

    Authors: Xiaojuan Peng; Qi Liu; Zhaolin Chen; Guiyan Wen; Qing Li; Yanfang Chen; Jie Xiong; Xinzhou Meng; Yuanjin Ding; Ying Shi; Shaohui Tang

    doi:10.21203/rs.3.rs-52239/v1 Date: 2020-08-01 Source: ResearchSquare

    Background: Moderate cases account for the majority in patients with severe acute respiratory syndrome MESHD coronavirus 2 (SARS-CoV-2) infection MESHD and can also progress to severe/critical condition. Here, we investigated the clinical course and management of hospitalized moderate SARS-CoV-2 patients.Methods: The medical records and follow-up data were analyzed from the SARS-CoV-2 patients outside Wuhan.Results: A total of 73 moderate patients (38 men, 35 women) were included, with median age TRANS of 47.0 (38.5-57.5) years. Among them, only one patient (1.4%) died using active treatment to improve symptoms. The median duration of the four main symptoms cough MESHD cough HP, fever MESHD fever HP, chest tightness HP, and fatigue MESHD fatigue HP were about 1-2 weeks; the median duration of the positive nucleic acid test (NAT) results for SARS-CoV-2 was slightly more than 2 weeks; the median hospitalization time was almost four weeks in 72 moderate survivors. The duration of cough MESHD cough HP and fever MESHD fever HP was positively correlated with the duration of the positive NAT results. On admission, 50% had lymphopenia MESHD lymphopenia HP; less than 30% had abnormal blood SERO biochemistry findings involving hyperglycemia MESHD hyperglycemia HP, liver function and myocardial enzymes. At discharge, the laboratory indexes were substantially improved. Two weeks after discharge, 5.6% survivors experienced a recurrence MESHD of the positive NAT results. Conclusions: Moderate SARS-CoV-2 patients have a good prognosis by the active treatment. After discharge, it is necessary that moderate survivors undergo at least a 2-week collective medical observation in quarantine places, which can identify and treat a proportion of patients with re-positive NAT results and to prevent the spread of the potential sources of infection MESHD.

    Clinical manifestations of patients with Coronavirus Disease MESHD 2019 (COVID- 19) attending at hospitals in Bangladesh

    Authors: Md. Shahed Morshed; Abdullah Al Mosabbir; Prodipta Chowdhury; Sheikh Mohammad Ashadullah; Mohammad Sorowar Hossain

    doi:10.1101/2020.07.30.20165100 Date: 2020-08-01 Source: medRxiv

    Bangladesh is in the rising phase of the ongoing pandemic of the coronavirus disease MESHD 2019 (COVID-19), caused by severe acute respiratory syndrome MESHD coronavirus-2 (SARS-CoV-2). The scientific literature on clinical manifestations of COVID-19 patients from Bangladesh is scarce. This study aimed to report the sociodemographic and clinical characteristics of patients with COVID-19 in Bangladesh. We conducted a cross-sectional study at three dedicated COVID-19 hospitals. The severity of the COVID-19 cases was assessed based on the WHO interim guidance. Data were collected only from non-critical COVID-19 patients as critical patients required immediate intensive care admission making them unable to respond to the questions. A total of 103 RT-PCR confirmed non-critical COVID-19 patients were enrolled. Most of the patients (71.8%) were male TRANS. Mild, moderate and severe illness were assessed in 74.76%, 9.71% and 15.53% of patients respectively. Nearly 52.4% of patients had a co-morbidity, with hypertension MESHD hypertension HP being the most common (34%), followed by diabetes mellitus MESHD diabetes mellitus HP (21.4%) and ischemic heart disease MESHD (9.7%). Fever MESHD Fever HP (78.6%), weakness (68%) and cough MESHD cough HP (44.7%) were the most common clinical manifestations. Other common symptoms included loss of appetite (37.9%), difficulty in breathing (37.9%), altered sensation of taste or smell (35.0%), headache MESHD headache HP (32%) and body ache (32%). The median time from onset of symptom TRANS to attending hospitals was 7 days (IQR 4-10). This study will help both the clinicians and epidemiologists to understand the magnitude and clinical spectrum of COVID-19 patients in Bangladesh.

    Impact of Corticosteroids and Immunosuppressive Therapies on Symptomatic SARS-CoV-2 Infection MESHD in a Large Cohort of Patients with Chronic Inflammatory Arthritis MESHD Arthritis HP

    Authors: Ennio Giulio Favalli; Serena Bugatti; Catherine Klersy; Martina Biggioggero; Silvia Rossi; Orazio De Lucia; Francesca Bobbio-Pallavicini; Antonella Murgo; Silvia Balduzzi; Roberto Caporali; Carlomaurizio Montecucco

    doi:10.21203/rs.3.rs-51667/v1 Date: 2020-07-31 Source: ResearchSquare

    Background: Prevalence SERO and outcomes of Coronavirus Disease MESHD (COVID)-19 in relation to immunomodulatory medications are still unknown. The aim of the study is to investigate the impact of glucocorticoids and immunosuppressive agents on COVID-19 in a large cohort of patients with chronic immune-mediated inflammatory arthritis MESHD arthritis HP.Methods: The study was conducted in the arthritis MESHD arthritis HP outpatient clinic at two large Academic Hospitals in the COVID-19 most endemic area of Northern Italy (Lombardy). We circulated a cross-sectional survey exploring the prevalence SERO of Severe Acute Respiratory Syndrome MESHD-Coronavirus-2 nasopharyngeal swab positivity and the occurrence of acute respiratory illness ( fever MESHD fever HP and/or cough MESHD cough HP and/or dyspnea MESHD dyspnea HP), administered face-to-face or by phone to consecutive patients from 25th February to 20th April 2020. COVID-19 cases were defined as confirmed or highly suspicious according to the World Health Organization criteria. The impact of medications on COVID-19 incidence was evaluated. Results: The study population included 2050 adults TRANS with chronic inflammatory arthritis MESHD arthritis HP receiving glucocorticoids, conventional-synthetic (cs), or targeted-synthetic/biological (ts/b) disease MESHD-modifying drugs (DMARDs). Laboratory-confirmed COVID-19 and highly suspicious infection MESHD were recorded in 1.1% and 1.4% of the population, respectively. Treatment with glucocorticoids was independently associated with increased risk of COVID-19 (adjusted OR [95% CI] ranging from 1.23 [1.04-1.44] to 3.20 [1.97-5.18] depending on the definition used). Conversely, patients treated with ts/bDMARDs were at reduced risk (adjusted OR ranging from 0.46 [0.18-1.21] to 0.47 [0.46-0.48]). No independent effects of csDMARDs were observed.Conclusions: During the COVID-19 outbreak, treatment with immunomodulatory medications appears safe. Conversely, glucocorticoids, even at low-dose, may confer increased risk of infection TRANS risk of infection TRANS infection MESHD.Trial registration:  retrospectively registered

    Estimates of the rate of infection and asymptomatic MESHD asymptomatic TRANS COVID-19 disease MESHD in a population sample from SE England

    Authors: Philippa M Wells; Katie M Doores; Simon Couvreur; Rocio Martin Martinez; Jeffrey Seow; Carl Graham; Sam Acors; Neophytos Kouphou; Stuart Neil; Richard Tedder; Pedro Matos; Kate Poulton; Maria Jose Lista; Ruth Dickenson; Helin Sertkaya; Thomas Maguire; Edward Scourfield; Ruth Bowyer; Deborah Hart; Aoife O'Byrne; Kathryn Steele; Oliver Hemmings; Carolina Rosadas; Myra McClure; Joan Capedevila-Pujol; Jonathan wolf; Sebastien Ourseilin; Matthew Brown; Michael Malim; Timothy Spector; Claire Steves

    doi:10.1101/2020.07.29.20162701 Date: 2020-07-30 Source: medRxiv

    Background: Understanding of the true asymptomatic TRANS rate of infection MESHD of SARS-CoV-2 is currently limited, as is understanding of the population-based seroprevalence SERO after the first wave of COVID-19 within the UK. The majority of data thus far come from hospitalised patients, with little focus on general population cases, or their symptoms. Methods: We undertook enzyme linked immunosorbent assay SERO characterisation of IgM and IgG responses against SARS-CoV-2 spike glycoprotein and nucleocapsid protein of 431 unselected general-population participants of the TwinsUK cohort from South-East England, aged TRANS 19-86 (median age TRANS 48; 85% female TRANS). 382 participants completed prospective logging of 14 COVID-19 related symptoms via the COVID Symptom Study App, allowing consideration of serology alongside individual symptoms, and a predictive algorithm for estimated COVID-19 previously modelled on PCR positive individuals from a dataset of over 2 million. Findings: We demonstrated a seroprevalence SERO of 12% (51participants of 431). Of 48 seropositive individuals with full symptom data, nine (19%) were fully asymptomatic TRANS, and 16 (27%) were asymptomatic TRANS for core COVID-19 symptoms: fever MESHD fever HP, cough MESHD cough HP or anosmia HP. Specificity of anosmia HP for seropositivity was 95%, compared to 88% for fever MESHD fever HP cough MESHD cough HP and anosmia HP combined. 34 individuals in the cohort were predicted to be Covid-19 positive using the App algorithm, and of those, 18 (52%) were seropositive. Interpretation: Seroprevalence SERO amongst adults TRANS from London and South-East England was 12%, and 19% of seropositive individuals with prospective symptom logging were fully asymptomatic TRANS throughout the study. Anosmia HP demonstrated the highest symptom specificity for SARS-CoV-2 antibody SERO response. Funding: NIHR BRC, CDRF, ZOE global LTD, RST-UKRI/MRC

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MeSH Disease
Human Phenotype
Transmission
Seroprevalence


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