Infections with Candidatus Neoehrlichia mikurensis and Cytokine Responses in 2 Persons Bitten by Ticks, Sweden

Emerg Infect Dis. 2015 Aug;21(8):1462-5. doi: 10.3201/eid2108.150060.


The prevalence of Candidatus Neoehrlichia mikurensis infection was determined in 102 persons bitten by ticks in Sweden. Two infected women had erythematous rashes; 1 was co-infected with a Borrelia sp., and the other showed seroconversion for Anaplasma phagocytophilum. Both patients had increased levels of Neoehrlichia DNA and serum cytokines for several months.

Keywords: Anaplasma phagocytophilum; Anaplasmataceae; Borrelia burgdorferi sensu lato; Candidatus Neoehrlichia mikurensis; Sweden; bacteria; cytokine responses; erythema; immunocompetence; tick-borne infections; ticks; vector-borne infections.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Animals
  • Candidiasis, Cutaneous / diagnosis*
  • Candidiasis, Cutaneous / pathology
  • Coinfection / complications
  • Cytokines / metabolism*
  • DNA, Bacterial / genetics*
  • Female
  • Humans
  • Middle Aged
  • Sweden
  • Tick-Borne Diseases / diagnosis*
  • Ticks*


  • Cytokines
  • DNA, Bacterial