sentences:  It was first isolated in "Psorophora ferox" mosquitoes in the state of Pará, Brazil.The virus is widely distributed in tropical and subtropical regions of Central and South America, such as Brazil, Colombia, French Guiana, Panama, Surinam, Trinidad and Venezuela.It is the only member of the SFV complex which has activity reported in Argentina, where two strains of the virus, (Cba An 979 and Cba An 995) have been isolated from febrile or dead equines at Rio Segundo and Colonia Videla, two villages located in the province of Córdoba.