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Hyalomma marginatum - A silent stowaway after vacation at the Adriatic Sea

Mateusz Markowicz1, Anna-Margarita Schötta1, Peter Hufnagl1

  • 1Austrian Agency for Health and Food Safety, Institute for Medical Microbiology and Hygiene, Vienna, Austria.

Ticks and Tick-Borne Diseases
|September 27, 2024
PubMed

Insights

The invasive Hyalomma marginatum tick, a vector for serious diseases, is being introduced to Austria by travelers, not just migratory birds. This highlights a new pathway for tick spread and potential disease transmission.

Area of Science:

  • Veterinary Entomology
  • Infectious Disease Epidemiology
  • Public Health

Background:

  • Hyalomma marginatum is an invasive tick species.
  • It transmits pathogens causing severe diseases like Crimean-Congo hemorrhagic fever.
  • Migratory birds are the suspected introduction vector for H. marginatum in Austria.

Purpose of the Study:

  • To investigate alternative introduction pathways for Hyalomma marginatum into Austria.
  • To assess the role of human travel in the spread of this invasive tick species.

Main Methods:

  • Surveillance of tick populations in Austria.
  • Identification of tick species and pathogen testing.
  • Analysis of travel routes and origins for imported ticks.

Main Results:

  • Several incidents of Hyalomma marginatum being imported by travelers in private cars from Croatia to Austria were recorded.
  • One identified tick tested positive for Rickettsia aeschlimannii.

Conclusions:

  • Tourist traffic represents a significant pathway for the northward expansion of Hyalomma marginatum.
  • Human-assisted transport may be as important as bird migration for the introduction of this invasive tick species into new regions.
Keywords:
Crimean-Congo hemorrhagic feverHyalomma marginatumRickettsia aeschlimanniiTickTravel

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