Some initial result of study on Tembusu virus in the infected ducks in Ha Noi

Abstract

This study was conducted to determine the presence of Tembusu virus in the duck flocks Ha Noi area. The result of RT-PCR combining with NS5B gene sequence analysis showed the presence of Tembusu virus in the infected duck samples collected in Ha Noi in 2019. The typical clinic symptoms and gross lesions of the infected ducks with Tembusu virus included phenomena on loss of moving ataxia, paralysis, reduction of laying egg suddenly and severely hemorrhagic ovary, swollen spleen and liver. The initial analysis result indicated that the 3 Tembusu virus
strains in this study were classified as Thailand Tembusu virus strain and closely related (NS5B gene sequence) with the Tembusu virus strain that was detected in Thai Land in 2013 (KR061333)