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© Pierre Gounon
Virus influenza purifié, agent de la grippe. Ce virus enveloppé possède un génome fragmenté : 8 segments d'ARN négatif protégés par une nucléocapside.
Publication : Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases

High prevalence of cyclovirus Vietnam (CyCV-VN) in plasma samples from Madagascan healthy blood donors

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases - 07 Sep 2018

Sauvage V, Gomez J, Barray A, Vandenbogaert M, Boizeau L, Tagny CT, Rakoto O, Bizimana P, Guitteye H, Ciré BB, Soumana H, Tchomba JS, Caro V, Laperche S

Link to Pubmed [PMID] – 30201501

Infect. Genet. Evol. 2018 12;66:9-12

Cycloviruses, small ssDNA viruses belonging to the Circoviridae family, have been suggested as possible causes of enteric, respiratory and neurological disorders in human patients. One of these species, cyclovirus-Vietnam (CyCV-VN), initially isolated from cerebrospinal fluid samples of patients with unexplained neurological disorders, has since been reported in serum samples from chronically patients infected with HBV, HCV or HIV, in Italy. On the other hand, CyCV-VN was not detected in serum samples from healthy individuals. Here, we report on a high prevalence of 43.4% (40/92) of CyCV-VN in plasma samples from asymptomatic blood donors from Madagascar. Interestingly, this virus was not detected by metagenomics and PCR in six other African countries, suggesting regional differences in CyCV-VN prevalence across Africa. Phylogenetic analysis based on the complete genomes showed that CyCV-VN sequences isolated from blood were most closely related to sequences previously reported from human stool in Madagascar. Further investigations using larger cohorts are required to determine the global epidemiology, the natural history and the pathological significance, if any, of CyCV-VN infection in humans.

https://www.ncbi.nlm.nih.gov/pubmed/30201501