Here, using viral metagenomics combined with conventional PCR, the complete genome sequence of a novel anellovirus (named anel-ch-zj and GenBank no. MT157223) from nasopharynx secretion specimens from hospitalized neonates was determined, and the deduced amino acid sequence of its ODF1 protein was found to be only 33.19%-39.33% identical to those of related anelloviruses with sequences available in the GenBank database, suggesting that it represents a putative new genus within the family Anelloviridae. PCR screening of 135 samples (including 45 nasopharynx secretion, 45 blood, and 45 fecal specimens collected from 45 individual hospitalized neonates) indicated that two nasopharynx secretion, two blood, and four fecal samples were positive for anel-ch-zj. Further PCR screening of 50 blood samples, 115 fecal samples, and 396 nasopharynx secretions collected from hospitalized children 1-5 years old did not yield any positive results. Whether this novel anellovirus detected in neonates is associated with specific diseases needs future investigation.
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