In studies conducted with other hemorrhagic fevers such as dengue hemorrhagic fever (DHF) (Tseng et al. 2000, Srikiatkhachorn et al. 2007, Furuta et al. 2012, del Moral-Hernández et al. 2014) and hemorrhagic fever with renal syndrome (HFRS) (Ma et al. 2012), also VEGF level was statistically significantly higher in patient groups. This evidence concerns the gene VEGFA and hemorrhagic fever.