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Age-related pattern of KI and WU polyomavirus infection.

ABSTRACT: BACKGROUND:The role of two recently identified polyomaviruses, KI and WU, in the causation of respiratory disease has not been established. OBJECTIVES:To determine the prevalence of KI and WU viruses (KIV and WUV) in 371 respiratory samples and evaluate their contribution to respiratory disease. STUDY DESIGN:Specimens were screened for KIV and WUV using single, multiplex or real time PCR; co-infection with other respiratory viruses was evaluated. RESULTS:Of the 371 samples analysed, 10 (2.70%) were positive for KIV and 4 (1.08%) were positive for WUV yielding an overall case prevalence of KIV and WUV infection of 3.77%. KIV and WUV were identified in patients aged<15 years (11 patients) with upper or lower respiratory tract infection and >45 years (3 patients) with upper respiratory tract infection. Co-infections were found in 5 (50%) and 3 (75%) of the KIV and WUV positive samples, respectively. CONCLUSIONS:This study supports previous conclusions that KIV and WUV detection in the respiratory tract may be coincidental and reflect reactivation of latent or persistent infection with these viruses. The age distribution of KIV and WUV infection in this study mirrors that found for the other human polyomaviruses, BK and JC.

SUBMITTER: Abedi Kiasari B

PROVIDER: S-EPMC7108349 | biostudies-literature | 2008 Sep

REPOSITORIES: biostudies-literature

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Age-related pattern of KI and WU polyomavirus infection.

Abedi Kiasari B B Vallely P J PJ Corless C E CE Al-Hammadi M M Klapper P E PE

Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology 20080624 1

<h4>Background</h4>The role of two recently identified polyomaviruses, KI and WU, in the causation of respiratory disease has not been established.<h4>Objectives</h4>To determine the prevalence of KI and WU viruses (KIV and WUV) in 371 respiratory samples and evaluate their contribution to respiratory disease.<h4>Study design</h4>Specimens were screened for KIV and WUV using single, multiplex or real time PCR; co-infection with other respiratory viruses was evaluated.<h4>Results</h4>Of the 371 s ...[more]

PMID: 18573691

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Project description:OBJECTIVE:To investigate the relationship of KI polyomavirus (KIPyV) and WU polyomavirus (WUPyV) with acute respiratory infection in children in Tianjin, China. METHODS:A total of 3?730 nasopharyngeal secretions were collected from hospitalized children with acute respiratory infection in Tianjin Children's Hospital from January 2011 to December 2013. Viral nucleic acid was extracted, and virus infection (KIPyV and WUPyV) was determined by PCR. Some KIPyV-positive and WUPyV-positive PCR products were subjected to sequencing. Sequencing results were aligned with the known gene sequences of KIPyV and WUPyV to construct a phylogenetic tree. Amplified VP1 fragments of KIPyV were inserted into the cloning vector (PUCm-T) transformed into E.?coli competent cells. Positive clones were identified by PCR and sequencing. The nucleotide sequences were submitted to GenBank. In addition, another seven common respiratory viruses in all samples were detected by direct immunofluorescence assay. RESULTS:In the 3?730 specimens, the KIPyV-positive rate was 12.14% (453/3?730) and the WUPyV-positive rate was 1.69% (63/3?730). The mean infection rate of KIPyV was significantly higher in June and July, while the mean infection rate of WUPyV peaked in February and March. Most of the KIPyV-positive or WUPyV-positive children were <3 years. The co-infections with KIPyV, WUPyV, and other respiratory viruses were observed in the children. The co-infection rate was 2.31% (86/3?730) and there were nine cases of co-infections with WUPyV and KIPyV. Thirty-five KIPyV-positive and twelve WUPyV-positive PCR products were sequenced and the alignment analysis showed that they had high homology with the known sequences (94%-100% vs 95%-100%). The VP1 gene sequences obtained from two KIPyV strains in this study were recorded in GenBank with the accession numbers of KY465925 and KY465926. CONCLUSIONS:For some children with acute respiratory infection in Tianjin, China, the acute respiratory infection may be associated with KIPyV and WUPyV infections. KIPyV infection is common in summer, and WUPyV infection in spring. The epidemic strains in Tianjin have a high homology with those in other regions.

Dataset Information

Age-related pattern of KI and WU polyomavirus infection.

Publications

Age-related pattern of KI and WU polyomavirus infection.

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