IDENTIFYING OF HUMAN METAPNEUMOVIRUS AND ITS PHENOTYPE AS A CAUSATIVE AGENTS OF PNEUMONIA IN CHILDREN

  • Abbas Mohammed Hussein Al-shebani Department of Pediatrics, College of Medicine, University of Al-Qadisiyah, Iraq.
  • Adnan Hamad Aubaid Department of Medical Microbiology, College of Medicine University of Al-Qadisiyah, Iraq.

Abstract

Objectives: The present investigational study was aimed to detect and identify the genotypes of Human metapneumovirus (hMPV) and its phylogeny with respiratory syncytial viruses (RSV) that cause pulmonary inflammation.

Material and Methods: A total of 250 samples of patients who were clinically diagnosed respiratory tract illness were collected from Maternity and Children Hospital in Al Diwaniyah city, Iraq. The clinical samples were nasopharyngeal, nasal and throat swabs. The current study screened the presence of hMPV and RSV (A and B) genotypes from nasopharyngeal specimens of children aged from several days to 10 years old.

Results: The results revealed that 6% were infected with hMPV, 8% of respiratory syncytial viruses type A (RSV-A) and 14% of respiratory syncytial virus’s type B (RSV-B) from children who are suffering from respiratory illness. Phylogenetic tree analysis of hMPV based on the partial sequences of the fusion protein (F) gene was used for genotyping and detection. The phylogenetic tree was constructed using maximum likelihood tree method in MEGA 6.0 version. The local hMPV isolates (S1) were closely related to NCBI-Blast hMPV genotype A1 (KM408076.1), the local hMPV isolates (S2, S3, and S5) were closely related to NCBI-Blast hMPV genotype B1 (KJ196323.1), and the local hMPV isolates (S4) were closely related to NCBI-Blast hMPV genotype B2 (JQ041689.1).

Conclusions: The prevalence rate of hMPV is less than RSV, and both subtypes of hMPV, A and B may exist and circulate in one season, and the predominant sublineage of hMPV shifts in progressive season.

 

Keywords: DNA, Sequencing, Human metapneumovirus, Phylogenetic tree, Respiratory syncytial virus

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Hussein Al-shebani, A. M., and A. H. Aubaid. “IDENTIFYING OF HUMAN METAPNEUMOVIRUS AND ITS PHENOTYPE AS A CAUSATIVE AGENTS OF PNEUMONIA IN CHILDREN”. Asian Journal of Pharmaceutical and Clinical Research, Vol. 11, no. 4, Apr. 2018, pp. 450-4, doi:10.22159/ajpcr.2018.v11i4.25578.
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