Dataset Information

Plasma virome of 781 Brazilians with unexplained symptoms of arbovirus infection include a novel parvovirus and densovirus.

ABSTRACT: Plasma from patients with dengue-like symptoms was collected in 2013 to 2016 from the Brazilian states of Tocantins and Amapa. 781 samples testing negative for IgM against Dengue, Zika, and Chikungunya viruses and for flaviviruses, alphaviruses and enteroviruses RNA using RT-PCRs were analyzed using viral metagenomics. Viral particles-associated nucleic acids were enriched, randomly amplified, and deep sequenced in 102 mini-pools generating over 2 billion reads. Sequence data was analyzed for the presence of known and novel eukaryotic viral reads. Anelloviruses were detected in 80%, human pegivirus 1 in 19%, and parvovirus B19 in 17% of plasma pools. HIV and enteroviruses were detected in two pools each. Previously uncharacterized viral genomes were also identified, and their presence in single plasma samples confirmed by PCR. Chapparvovirus and ambidensovirus genomes, both in the Parvoviridae family, were partially characterized showing 33% and 34% identity in their NS1 sequences to their closest relative. Molecular surveillance using pre-existing plasma from febrile patients provides a readily scalable approach for the detection of novel, potentially emerging, viruses.

SUBMITTER: Fahsbender E

PROVIDER: S-EPMC7058308 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Plasma virome of 781 Brazilians with unexplained symptoms of arbovirus infection include a novel parvovirus and densovirus.

Fahsbender Elizabeth E Charlys da-Costa Antonio A Elise Gill Danielle D Augusto de Padua Milagres Flavio F Brustulin Rafael R Julio Costa Monteiro Fred F Octavio da Silva Rego Marlisson M Soares D'Athaide Ribeiro Edcelha E Cerdeira Sabino Ester E Delwart Eric E

PloS one 20200305 3

Plasma from patients with dengue-like symptoms was collected in 2013 to 2016 from the Brazilian states of Tocantins and Amapa. 781 samples testing negative for IgM against Dengue, Zika, and Chikungunya viruses and for flaviviruses, alphaviruses and enteroviruses RNA using RT-PCRs were analyzed using viral metagenomics. Viral particles-associated nucleic acids were enriched, randomly amplified, and deep sequenced in 102 mini-pools generating over 2 billion reads. Sequence data was analyzed for th ...[more]

PMID: 32134963

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Project description:To conduct a pilot trial of a primary care Symptoms Clinic for patients with medically unexplained symptoms and evaluate recruitment and retention, and acceptability of the intervention and to estimate potential treatment effects for a full trial.Randomised parallel group pilot trial.Primary care in one locality.Primary care database and postal questionnaire were used to identify patients with multiple specialist referrals and multiple physical symptoms unlikely to be explained by disease.General practitioner (GP) with special interest 'Symptoms Clinic' + usual care versus usual care alone. The Symptoms Clinic comprised one long (1 h) and three short (20 min) appointments.Number of patients identified and recruited; acceptability of the intervention (items from Client Satisfaction Questionnaire and interview); Medical Outcomes Survey Short Form 12 (SF-12) physical component summary.Automated blocked randomisation accessed by telephone.None. NUMBERS RANDOMIZED: 16 to intervention and 16 to usual care alone.72 patients, from seven GP practices, had repeated specialist referrals and a Patient Health Questionnaire (PHQ)-15 score of ?10 indicating a high probability of medically unexplained symptoms. 15 were ineligible and 25 declined to participate. NUMBERS ANALYSED: 26 patients; two patients randomised to the intervention group were incorrectly included, three patients in the intervention group and one control did not complete outcome measures.Most patients randomised to the Symptoms Clinic found the intervention acceptable: eight out of 11 reported the intervention helped them to deal with their problems. The mean difference between groups in SF-12 physical component summary, adjusted for baseline, was 3.8 points (SD 6).No observed harms.Patients with multiple medically unexplained symptoms can be systematically identified in primary care; a randomised trial comparing the Symptoms Clinic with usual care is feasible and has the potential to show clinically meaningful benefit.ISRCTN63083469.

Dataset Information

Plasma virome of 781 Brazilians with unexplained symptoms of arbovirus infection include a novel parvovirus and densovirus.

Publications

Plasma virome of 781 Brazilians with unexplained symptoms of arbovirus infection include a novel parvovirus and densovirus.

Similar Datasets

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