Corpus overview


Overview

MeSH Disease

Human Phenotype

Cough (6)

Fever (5)

Anosmia (3)

Myalgia (2)

Anorexia (1)


Transmission

Seroprevalence
    displaying 1 - 6 records in total 6
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    Alternative or Complementary Role of Serological Rapid Antibody Test SERO in the Management of Possible COVID-19 Cases

    Authors: Fatma Yildirim; Pinar Yildiz Gulhan; Ozlem Ercen Diken; Aylin Capraz; Meltem Simsek; Berna Botan Yildirim; Muhammet Ridvan Taysi; Sakine Yilmaz Ozturk; Nurcan Demirtas; Julide Ergil; Adem Dirican; Tugce Uzar; Irem Karaman; Sevket OZKAYA; Elisa Resconi; Monica I Lupei; Christopher J Tignanelli

    doi:10.1101/2020.09.13.20193615 Date: 2020-09-14 Source: medRxiv

    Background: Although the gold diagnostic method for COVID-19 is accepted as the detection of viral particles by reverse transcription polymerase chain reaction (RT-PCR), serology testing for SARS-CoV-2 is at increased demand. A primary aim for utilization of serological tests SERO are to better quantify the number of COVID-19 cases including those RT-PCR samples were negative but showing clinical and radiological signs of COVID-19. In this study, we aimed to report the features of the patients that were diagnosed and treated as possible COVID-19 cases whose multiple nasopharyngeal swab samples were negative by RT-PCR but serological IgM/IgG antibody SERO against SARS-CoV-2 were detected by rapid antibody test SERO. Method: We retrospectively analyzed eighty suspected COVID-19 cases that have at least two negative consecutive COVID-19 PCR test and were subjected to serological rapid antibody test SERO. Result: The specific antibodies SERO against SARS-CoV-2 were detected as positive in twenty-two patients. The mean age TRANS of patient group was 63.2+-13.1 years old with male TRANS / female TRANS ratio 11/11. Cough HP was the most common symptom with 90.9%. Most common presenting chest CT findings were bilateral ground glass opacities (77.2%) and alveolar MESHD consolidations (50.09%). The mean duration from symptom initiation to hospital admission, to hospitalization, to treatment initiation and to detection of antibody SERO positivity were 8.6 +- 7.2, 11.2 +- 5.4, 7.9 +- 3.2 and 24 +- 17 days, respectively. Conclusion: Our study demonstrated the feasibility of COVID-19 diagnosis based on rapid antibody test SERO in the cases of patients whose RT-PCR samples were negative. We suggest that the detection of antibodies SERO against SARS-CoV-2 with rapid antibody test SERO should be included in the diagnostic algorithm in suspected COVID-19 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 anosmia MESHD as the most prominently associated self-reported symptom in addition to fever HP fever MESHD, dry cough MESHD cough HP, anorexia HP anorexia MESHD, and myalgias HP myalgias MESHD. 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.

    Estimates of the rate of infection MESHD and asymptomatic TRANS COVID-19 disease 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 of SARS-CoV-2 MESHD 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 HP fever MESHD, cough HP cough MESHD or anosmia HP anosmia MESHD. Specificity of anosmia HP anosmia MESHD for seropositivity was 95%, compared to 88% for fever HP fever MESHD cough HP and anosmia HP anosmia MESHD 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

    A population-based study of the prevalence SERO of COVID-19 infection MESHD in Espirito Santo, Brazil: methodology and results of the first stage

    Authors: Cristiana Costa Gomes; Crispim Cerutti Jr.; Eliana Zandonade; Ethel Leonor Noia Maciel; Filomena Euridice Carvalho de Alencar; Gilton Luiz Almada; Orlei Amaral Cardoso; Pablo Medeiros Jabor; Raphael Lubiana Zanotti; Tania Queiroz Reuter; Vera Lucia Gomes de Andrade; Whisllay Maciel Bastos; Nesio Fernandes de Medeiros Jr.

    doi:10.1101/2020.06.13.20130559 Date: 2020-06-16 Source: medRxiv

    BACKGROUND: COVID-19 is affecting almost the entire world, causing more than four hundred thousand deaths and undermining the health care systems, as much as the economy, of the afflicted countries. The strategies for prevention depend on largely lacking information, as infection MESHD prevalence SERO and virus pathogenicity. This study aimed to determine the prevalence SERO, the pathogenicity, and the speed of infection MESHD spreading in a large population in Brazil. MATERIALS AND METHODS: This is a serial cross-sectional study designed on a population basis and structured over houses as the sampling units. The sampling consisted of four visits at 15 days intervals in randomly selected census-designated sectors of the State major municipalities (reference municipalities) and two visits at 30 days intervals in smaller municipalities of the same regions of those of reference. At each visit, the investigators sampled houses and sampled one individual in each house for data collection. After the informed consent, the investigators performed a rapid antibody SERO detection test (Celer Technology, Inc) and applied a questionnaire containing clinical and demographic questions. RESULTS: From May 13th to 15th, the investigators performed 6,393 rapid tests SERO in 4,612 individuals of the reference municipalities, 1,163 individuals of the smaller municipalities, and 166 contacts of the positive individuals. Ninety-seven dwellers were positive in the reference municipalities, giving a prevalence SERO of 2.1% (CI 95%: 1.67-2.52%). In the smaller municipalities, the figure was 0.26% (CI 95%: 0.05%-0.75%) (three positives). There was an association of the positive result with female TRANS sex (p = 0.013) and houses with five dwellers or more (p = 0.003). Seventy-eight positive individuals reported symptoms in the previous 15 days (80.4%), being anosmia HP anosmia MESHD (45.4%), cough HP (40.2%), and myalgia HP myalgia MESHD (38.1%) the more frequent. About one-third of them reported fever HP fever MESHD (28.9%). CONCLUSIONS: The results reveal a still small prevalence SERO of infection MESHD in the study area, despite the significant number of sick people overloading the health system. The figures indicate an important underreporting in the area and a frequency that still can grow, making necessary public health actions for the containment of the transmission TRANS.

    SARS-CoV-2 Serology Results in the First COVID-19 Case in California: A Case Report and Recommendations for Serology Testing and Interpretation

    Authors: Richard B. Lanman, MD; Todd H. Lanman

    doi:10.21203/rs.3.rs-35358/v1 Date: 2020-06-12 Source: ResearchSquare

    Background: As countries in COVID-19 pandemic lockdown begin relaxation of shelter-in-place mitigation strategies, the role of serology testing escalates in importance. However, there are no clear guidelines as to when to use qualitative rapid diagnostic serology tests (RDTs) vs. SARS-CoV-2 viral RNA load (PCR) tests as an aid in acute diagnosis of patients presenting with flu-like symptoms, nor how to interpret serology test results in asymptomatic TRANS individuals or those with atypical COVID-19 symptomatology. Here we describe, in the context of the likely first case of COVID-19 in California, with an atypical presentation and not tested acutely, who nearly 3 months later was found to be IgM- and IgG+ positive for SARS-CoV-2 antibodies SERO, highlighting the role of RDT- based serology testing SERO and interpretation in retrospective diagnosis.Case Presentation: A 62-year-old male TRANS practicing neurosurgeon had onset of flu-like symptoms on January 20 with fatigue HP fatigue MESHD, slight cough HP only on deep inspiration, intermittent pleuritic chest pain MESHD chest pain HP unrelated to exertion, dyspnea HP dyspnea MESHD, and night sweats HP but without fever HP fever MESHD, sore throat or rhinorrhea HP rhinorrhea MESHD. He had recently traveled TRANS abroad but not to China. CT scan revealed right lower lobe infiltrate and effusion. Because of atypical symptoms, and low prevalence SERO of COVID-19 in January, community acquired pneumonia HP pneumonia MESHD was diagnosed and one week of doxycycline was prescribed without relief, followed by a second week of azithromycin with symptom remission. Three months later the physician-patient (author THL), tested positive for SARS-CoV-2 antibodies SERO by a serology point-of-care rapid diagnostic test (RDT).Conclusions: Serology testing may be an aid in acute diagnosis of COVID-19, especially in patients with atypical presentations, as well as in assessment of asymptomatic TRANS higher-risk persons such as healthcare workers for prior infection MESHD. Recommendations for serology testing and interpretation are explicated.

    A national prospective cohort study of SARS/COV2 pandemic outcomes in the U.S.: The CHASING COVID Cohort

    Authors: McKaylee Robertson; Sarah Kulkarni; Amanda Berry; Chloe Mirzayi; Andrew R Maroko; Rebecca Zimba; Drew Westmoreland; Christian Grov; Angela Parcesepe; Levi Waldron; Denis Nash

    doi:10.1101/2020.04.28.20080630 Date: 2020-05-04 Source: medRxiv

    Introduction: The Chasing COVID Cohort (C3) study is a US-based, geographically and socio-demographically diverse sample of adults TRANS (18 and older) enrolled into a prospective cohort study during the upswing of the U.S. COVID-19 pandemic. Methods: We used internet-based strategies to enroll C3 participants beginning March 28th, 2020. Following baseline questionnaire completion, study participants will be contacted monthly (for 6 months) to complete assessments of engagement in non-pharmaceutical interventions (e.g., use of cloth masks, avoiding large gatherings); COVID-19 symptoms; SARS/COV2 testing and diagnosis; hospitalizations; healthcare access; and uptake of health messaging. Dried blood SERO spot (DBS) specimens will be collected at the first follow-up assessment (last week of April 2020) and at month 3 (last week of June 2020) and stored until a validated serologic test SERO is available. Results: As of April 20, 2020, the number of people that completed the baseline survey and provided contact information for follow-up was 7,070. Participants resided in all 50 US states, the District of Columbia, Puerto Rico, and Guam. At least 24% of participants were frontline workers (healthcare and other essential workers). Twenty-three percent (23%) were 60+ years, 24% were Black or Hispanic, 52% were men, and 52% were currently employed. Nearly 20% reported recent COVID-like symptoms ( cough HP cough MESHD, fever HP fever MESHD or shortness of breath MESHD) and a high proportion reported engaging in non-pharmaceutical interventions that reduce SARS/COV2 spread (93% avoided groups >20, 58% wore masks; 73% quarantined). More than half (54%) had higher risk for severe COVID-19 illness should they become infected with SARS/COV2 based on age TRANS, underlying health conditions (e.g., chronic lung disease HP chronic lung disease MESHD), or daily smoking. Discussion: A geographically and socio-demographically diverse group of participants was rapidly enrolled in the C3 during the upswing of the SARS/COV2 pandemic. Strengths of the C3 include the potential for direct observation of, and risk factors for, seroconversion and incident COVID disease (among those with or without antibodies SERO to SARS/COV2) in areas of active transmission TRANS.

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MeSH Disease
Human Phenotype
Transmission
Seroprevalence


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