Abstract
Rabies is the most critical zoonotic disease in Iran, which imposes many extra costs on health care system in each country. The present study aimed to determine the molecular characteristics of the wild circulating strains of the rabies virus (RABV) collected in Iran during 2015-2017. Rabies-suspected samples were collected from different regions of Iran and identified for RABV antigen confirmation using fluorescent antibody tests. Polymerase chain reaction (PCR) was performed on positive samples and gene sequencing was done on rabies nucleoprotein and glycoproteingenes to determine the rabies molecular characteristics. Accordingly, nine street RABVes were isolated. Then, N (802bp) and G (735bp) genes were amplified with specific primers using PCR. The sequence of nine strains was determined and compared with another 50 close to them, and the phylogenetic tree was plotted using neighbor-joining method by Mega 7 software. The molecular characteristic results indicated that all new strains belong to RABV wild species. As a result, the most prevalent strains of RABV in northwest, west, center, and south of Iran were identified. The present study may provide a better insight into the identification of all RABV strains, and understanding the evolutionary nature of RABV and how its hosts change in the world over the centuries.
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