Molecular Detection and Phylogenetic Analysis of Equine Herpes Virus-1 in Horses with History or Clinical Signs in Four Provinces of Iran
Equine herpes virus-1 (EHV-1) is a major cause of economic loss in horse industry and is well recognized as a cause of abortion, respiratory disease, neurologic disorders and death of neonatal foals.
The aim of this study was to evaluate the frequency of EHV-1 in horses with clinical signs and/or history associated with this virus from four provinces of Iran (Golestan, Tehran, Khuzestan, West Azer- baijan) that have considerable horse population, followed by phylogenetic study of positive cases and compare them with herpes viruses in other parts of the world.
Blood samples and nasal swabs were taken from 150 horses from four aforementioned provinc- es. DNA of samples was extracted and used for detection in real-time PCR TaqMan assay. Finally, phyloge- netic trees were designed based on neighbor joining method.
Out of 150 sampled horses, a total of 14 (9.33%) were found to be positive for EHV-1. The results indicated that positive cases of EHV-1 from this study were clustered to herpes virus cases in other parts of the world with a noticeable similarity.
This study confirmed the presence of EHV-1 in these provinces of Iran, thus consideration should be given to preventive and control programs to prevent dissemination and outbreak of this virus.
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