Received: 03-06-2021 / Accepted: 10-01-2022
Aviannephritis is an infectious diseases induced by several viruses, such as Infectious bronchitis virus (IBV) and Avian nephritis virus(ANV). In Vietnam, uric acid nephropathy found in sick chickens is commonly assigned as an infectious bronchitis virus-nephrosis form. In this report, RT-PCR method was applied for ANV detection. The presence of ANV was confirmed in a sick chick having nephritis with urate deposition in the absence of IBV infection. By genetic comparision of ORF1a sequences with the length of 447 nucleotides, the G19.24.2 virus strain were 95.30% similarity with a well characterized ANV/CHN/BJCP510-2/2018 strain (GenBank accession MN732558) detected in China in 2018. By phylogenetic classification, the ANV strain detected in this study was grouped with genotype 7 of ANV.