title: Transmission and evolution of tick-borne viruses.
abstract: Ticks transmit a diverse array of viruses such as tick-borne encephalitis virus, Powassan virus, and Crimean-Congo hemorrhagic fever virus that are reemerging in many parts of the world. Most tick-borne viruses (TBVs) are RNA viruses that replicate using error-prone polymerases and produce genetically diverse viral populations that facilitate their rapid evolution and adaptation to novel environments. This article reviews the mechanisms of virus transmission by tick vectors, the molecular evolution of TBVs circulating in nature, and the processes shaping viral diversity within hosts to better understand how these viruses may become public health threats. In addition, remaining questions and future directions for research are discussed.
authors: Department of Environmental Sciences, Center for Vector Biology & Zoonotic Diseases, The Connecticut Agricultural Experiment Station, New Haven, CT, United States.
authors: Doug E
authors: DE
authors: Brackney
authors: Department of Environmental Sciences, Center for Vector Biology & Zoonotic Diseases, The Connecticut Agricultural Experiment Station, New Haven, CT, United States. Electronic address: philip.armstrong@ct.gov.
authors: Philip M
authors: PM
authors: Armstrong
mesh_terms: D000818:Animals; D005075:Biological Evolution; D018562:Disease Transmission, Infectious; D014644:Genetic Variation; D006801:Humans; D012328:RNA Viruses / Q000145:classification / Q000235:genetics* / Q000254:growth & development*; D017282:Tick-Borne Diseases / Q000635:transmission* / Q000821:virology*; D014779:Virus Replication