In this review we covered encephalitides and other sequelae of arbovirus infections. A family Flaviviridae along with families Togaviridae, Bunyaviridae, Reoviridae and Arenaviridae had been previously classified as Arboviridae (arthropod-borne). In spite of a significant diversity of viruses of the Arboviridae group, the term “arboviruses” is still useful and widely used. Here we covered viruses spread by ticks: tick-borne encephalitis virus, Powassan, Russian spring summer encephalitis virus, Kyasanur forest disease virus, Omsk hemorrhagic fever virus, louping ill and by mosquitos: yellow fever virus, Wesselsbron virus, Ilheus virus, Japanese B encephalitis virus, Murray Valley encephalitis virus, St. Louis encephalitis virus, West Nile virus and Dengue hemorrhagic fever virus as well as a Modoc group. Togaviruses comprise Eastern, Western and Venezuelan equine encephalitis virus while fleboviruses, Rift Valley virus. Coltiviruses comprise Colorado thick fever virus.