No serological evidence for rickettsial diseases among Danish elite orienteerers

Peter Schiellerup, Thomas Dyhr, Jean Marc Rolain, Marianne Christensen, Rasmus Damsgaard, Niels Fisker, Niels Frost Andersen, Didier Raoult, Karen A Krogfelt

Research output: Contribution to journalJournal articleResearchpeer-review


A series of sudden unexpected cardiac deaths among Swedish elite orienteerers in the 1980s have resulted from the combination of infectious diseases and physical exercise. Studies in the late 1990s have pointed to Chlamydia and Barontella, which both had a high seroprevalence among Swedish elite orienteerers. We conducted a case-control study aimed to elucidate the serologic prevalence of rickettsial diseases among Danish elite orienteerers. Ticks are known as vectors for some rickettsial diseases. None of the orienteerers had a positive antibody titer against any of the tested Rickettsia despite a very high frequency of tick bites in this group.

Original languageEnglish
JournalAnnals of the New York Academy of Sciences
Pages (from-to)150-3
Number of pages4
Publication statusPublished - Oct 2006


  • Animals
  • Denmark
  • Environmental Exposure
  • Humans
  • Insect Bites and Stings
  • Rickettsia Infections
  • Rickettsiaceae Infections
  • Serologic Tests
  • Sports
  • Ticks


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