TY - JOUR UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119191486&doi=10.36380%2fjwpr.2021.37&partnerID=40&md5=71198154c474d5434f55c19f88691ab4 SP - 302 Y1 - 2021/09/25/ AV - public A1 - Abodalal, S. E. S. A. A1 - Hafez, M. S. A. A1 - Shosha, E. A. E. M. A1 - Warda, F. F. A1 - Hagag, N. M. KW - Upper Egypt KW - Nucleotide sequencing KW - Rabbit hemorrhagic disease virus KW - Reverse transcription-polymerase chain reaction KW - VP60 EP - 311 VL - 11 SN - 2322455X (ISSN) TI - Isolation and Molecular Characterization of Rabbit Haemorrhagic Disease Virus Strains Circulating in Rabbit Population Using Sequencing and Phylogenetic Analysis in upper Egypt N2 - Rabbit hemorrhagic disease (RHD) is a contagious viral disease that threatens rabbit farms locally and globally. The disease causative agent is the 63-Rabbit_Haemorrhagic_Disease_Virus_Strains_Circulating_in_Rabbit_Population_RHD virus (RHDV) of the family Caliciviridae. The present study aimed to identify and characterize RHDV strains currently circulating in Upper Egypt provinces. A total of 20 suspected RHDV samples were collected from non-vaccinated rabbit flocks from January to December 2019 in Upper Egypt governorates (New Valley and Assuit), Egypt. The RHDV was confirmed through the hemagglutination test (HA) and reverse transcription-polymerase chain reaction (RT-PCR). Further characterization of selected 4 isolates was performed by nucleotide sequencing of a partial VP60 gene. All of 11 RHDV RT-PCR-positive samples were positive for HA activity against human RBCs type "O". Based on the nucleotide sequencing, the selected 4 isolates were clustered as RHDV-1 variant strains (G3-G5). The nucleotide sequence identities of the 4 isolates were 94.2-100 %, compared to available RHDV strains from GenBank. In conclusion, the presence of RHDV-1 variant strains was detected and confirmed that threatens the rabbit?s populations in New Valley and Assuit governorates. PB - Scienceline Publication, Ltd JF - Journal of World's Poultry Research IS - 3 ID - eprints89 ER -