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 ORIGINAL ARTICLE
Year : 2019  |  Volume : 37  |  Issue : 1  |  Page : 12-18

Molecular studies on dengue viruses detected in patients from Central India


Division of Virology and Zoonoses, ICMR-National Institute of Research in Tribal Health, Jabalpur, Madhya Pradesh, India

Correspondence Address:
Dr. Pradip V Barde
ICMR-National Institute of Research in Tribal Health, Nagpur Road, Garha, Jabalpur, Madhya Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijmm.IJMM_18_377

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Purpose: Dengue viruses (DENVs), the causative agents of dengue (DEN), are classified into four serotypes and several genotypes. Identifying circulating serotypes and genotypes has clinical and epidemiological importance; however, limited information in this regard is available from Central India. This laboratory-based study was done to fill this lacuna. Materials and Methods: The samples collected in the acute phase of illness were subjected to DEN NS1 ELISA, and NS1-positive samples (n = 80) were subjected to serotyping; representative samples from each serotype were sequenced to identify genotypes. Results: Seventy-one (88.75%) samples could be serotyped. All the four DENV serotypes with dominance of DENV-3 (n = 33; 47%) were detected. DENV-4 was detected after a gap of 3 years. Cases with multiple DENV serotype infection were identified. Genotyping showed that DENV-1 belonging to genotype III, DENV-2 cosmopolitan (IV), DENV-3 genotype III lineage C and DENV-4 genotype I were in circulation in the year 2016. Conclusion: Our study documents the molecular characteristics of DENV circulating in the area. Detection of heterologous DENV serotype with dominance of DENV-3 emphasises the need for regular molecular monitoring.






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