Abstract
Fowl adenoviruses D and E (FAdV-D and E) can cause inclusion body hepatitis (IBH) in commercial chicken flocks. Recently, IBH outbreaks have been increasingly reported in different regions of Iran, particularly in broiler farms. The present study was conducted to perform, for the first time, a complete genome characterization of a FAdV isolate from an IBH outbreak in Iran. Briefly, liver samples were collected from affected broiler flocks and following viral DNA extraction and confirming by PCR technique; one positive sample was selected from an affected flock to conduct a complete genome sequencing. The current FAdV, named "Fowl_Adenovirus_D_isolate_iran/UT-Kiaee_2018", was placed into FAdV-11 serotype (D species). According to the complete genome sequence analysis, UT-Kiaee had high homology with Chinese and Canadian FAdV. The partial sequence of the hexon gene revealed that UT-Kiaee shared 100% identity with previous Iranian FAdVs. The present study was the first to report full genome FAdV in Iran and complete the puzzle of molecular epidemiology of FAdV in Iran through determining the possible origin of Iranian FAdvs, which are the causative agents of recent IBH outbreaks in Iran.
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