title: Powassan encephalitis and Colorado tick fever.
abstract: This article discusses two tick-borne illnesses: Powassan encephalitis, a rare cause of central nervous system infection caused by the Powassan virus, and Colorado tick fever, an acute febrile illness caused by the Colorado tick fever virus common to the Rocky Mountain region of North America.
authors.affiliation: Section of Pediatric Infectious Diseases, Department of Pediatrics, University of Nebraska Medical Center, 982162 Nebraska Medical Center, Omaha, NE 68198-2162, USA. jrromero@unmc.edu
authors.forename: José R
authors.initials: JR
authors.lastname: Romero
authors.forename: Kari A
authors.initials: KA
authors.lastname: Simonsen