Published in:
01-11-2018 | Brief Report
Molecular analysis of Newcastle disease virus isolates reveals a novel XIId subgenotype in Vietnam
Authors:
Xuyen Thi Kim Le, Huong Thi Thanh Doan, Thanh Hoa Le
Published in:
Archives of Virology
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Issue 11/2018
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Abstract
Eight Vietnamese Newcastle disease virus field isolates from 2008–2015 and 3 vaccine specimens were genotyped based on their full F gene sequences and compared to 80 reference strains representing all 18 genotypes. Three isolates formed a novel subgenotype XIId, identified for the first time in Vietnam; while the others clustered as follows: four in subgenotypes VIId and VIIh; two in Genotype I; and two in Genotype II. Evolutionary distance calculations confirmed the Vietnamese XIId isolates were distinct from XIIa and XIIb by 0.062–0.070; and from other genotypes by 0.089–0.245. This data demonstrated that a novel XIId subgenotype emerged in Vietnam indicating considerable genetic diversity, thus highlighting the need to implement antigenic matching during vaccination against NDVs.