Mohammadreza Ghorani - Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
Arash Ghalyanchi Langeroudi - Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
Omid Madadgar - Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
Mohammadreza Rezapanah - Center of Excellence for Organic Agriculture and Department of Biological Control, Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
Sedigheh Nabian - Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
Reza Khaltabadi Farahani - Iranian Veterinary Organization, Tehran, Iran
Hossein Maghsoudloo - Iranian Veterinary Organization, Tehran, Iran
Mohammad Forsi - Iranian Veterinary Organization, Tehran, Iran
Hamed Abdollahi - Iranian Veterinary Organization, Tehran, Iran
Hesameddin Akbarein - Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran

Chronic bee paralysis virus (CBPV) is an unclassified polymorphic single-stranded RNA virus. Among the viruses infecting honeybees, CBPV is known to induce significant losses in honeybee colonies. In this study, a total number of eighty-nine suspected apiaries from four regions of Iran (including Mazandaran, Khorasan Razavi, Hormozgan, and Kurdistan) were sampled and submitted for molecular identification. Three positive samples were detected by RT-PCR. All positive samples were confirmed by sequencing. The phylogenetic tree which displays the molecular relationship between the viruses of different Iranian geographic regions and references isolates was constructed. The Iranian isolates formed two distinct phylogenetic groups (Group ۱ and Group ۲). The IR-CPV-GMG-۱, IR-CPV-GMG-۲, IR-CPV-GMG-۴, and IR-CPV-GMG-۶ formed Group ۱ and IR-CPV-GMG-۳, IR-CPV-GMG-۵, and IR-CPV-GMG-۷ were in Group ۲ as a distinct group. Iranian isolates in group ۱ were similar to European and East Asian CBPVs. This research was the first phylogenetic analysis of CBPV in Iran. Further researches are needed to study the other aspects of this virus-like genetic characteristics and pathogenesis in Iran.

Chronic bee paralysis virus, Honeybee, Iran, Phylogenetic analysis, RT-PCR