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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Viral metagenomics in blood donations with post-donation illness reports from Brazil

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Bezerra, Rafael dos Santos [1, 2] ; De Oliveira, Leonardo Scalon [2] ; Moreno, Edson L. [2] ; Ubiali, Eugenia M. Amorim [2] ; Silveira, Roberta Maraninchi [2] ; da Silva Junior, Wilson A. [3] ; Covas, Dimas Tadeu [2] ; Kashima, Simone [2] ; Slavov, Svetoslav N. [4, 2]
Total Authors: 9
[1] Univ Sao Paulo, Fac Med Ribeirao Preto, Master Degree Program Clin Oncol Stem Cells & Cel, Ribeirao Preto, SP - Brazil
[2] Univ Sao Paulo, Fac Med Ribeirao Preto, Blood Ctr Ribeirao Preto, Ribeirao Preto, SP - Brazil
[3] Univ Sao Paulo, Fac Med Ribeirao Preto, Dept Genet, Ribeirao Preto, SP - Brazil
[4] Univ Sao Paulo, Fac Med Ribeirao Preto, Dept Internal Med, Ribeirao Preto, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: BLOOD TRANSFUSION; v. 19, n. 2, p. 93-101, MAR-APR 2021.
Web of Science Citations: 0

Background - Post-donation illness can be described as appearance of clinical symptoms in blood donors after donation. The consequent call back of the donor to report these symptoms to the blood collection institution is considered a post-donation illness report (PDIR). The most suitable way to examine whether PDIR is related to infection is to apply next-generation sequencing (NGS) and viral metagenomics. Investigation into a PDIR can reveal its importance for transfusion safety and help elaborate strategies for donor education in order to prevent the transfusion transmission of infections which are not routinely tested by the blood collection services. Materials and methods - We applied NGS and viral metagenomics on blood donations which were deferred due to a PDIR. Thirty-three PDIR donations obtained in the Blood Center of Ribeirao Preto, Southeast Brazil, were evaluated. Sequencing was performed using Illumina NextSeq 550 (Illumina Inc, San Diego, CA, USA) equipment and the reads obtained for each sample were analysed by specific bioinformatic pipeline for the classification and discovery of emerging viruses. The identified viral agents by metagenomics were directly confirmed by molecular methods. Results - In all PDIR donations, we found abundant reads of commensal viruses belonging to the Anelloviridae family as well as human pegivirus-1. However, we were also able to identify blood donations positive for clinically important viruses like dengue serotype-2 (DENV-2) of the Asian-American genotype and parvovirus 819 (B19V). Both viruses were also confirmed by real-time polymerase chain reaction, detecting DENV-2 RNA in a significant number of cases (7 samples, 21.2%), compared to B19V which was confirmed in 1 case (3.0%). Discussion - Our study applies for the first time viral metagenomics to evaluate the significance of PDIRs. We confirm the crucial importance of the donor providing a timely PDIR for the prevention of transfusion transmission of viral infections which are not routinely tested in the blood banks worldwide. (AU)

FAPESP's process: 19/07861-8 - Development of a bioinformatic pipeline for identification of emerging infectious diseases among patients in regimen of chronic transfusion
Grantee:Ian Nunes Valença
Support type: Scholarships in Brazil - Master
FAPESP's process: 14/50947-7 - INCT 2014: in Stem Cell and Cell Therapy
Grantee:Dimas Tadeu Covas
Support type: Research Projects - Thematic Grants
FAPESP's process: 19/08528-0 - Application of bioinformatic procedures for identification of the impact of the viral infections in hemotherapy
Grantee:Rafael dos Santos Bezerra
Support type: Scholarships in Brazil - Master