Tick maps
The tick maps are published regularly to provide the ECDC stakeholders, the scientific community and the general public with updated information on tick distribution at ‘regional’ administrative unit level (NUTS3 or equivalent and NUTS2 in Austria, Belgium, Denmark, Germany, The Netherlands, England (UK), Scotland (UK) and Wales (UK)).
Please note that the maps do not represent the official view or position of the countries.
Distribution maps of ticks
The maps show the current distribution of tick species in Europe at ‘regional’ administrative unit level. The maps are based only on confirmed data (published and unpublished) provided and validated by experts.
Separate maps for the distribution of each of the following tick species are currently available: Dermacentor reticulatus, Hyalomma lusitanicum, Hyalomma marginatum, Ixodes persulcatus, Ixodes ricinus, Ornithodoros erraticus, and Rhipicephalus sanguineus.
For tick species, the possible distribution statuses are:
- Present: The species has been observed to be present in at least one municipality within the administrative unit.
- Introduced: The species has been introduced in the administrative unit without confirmed establishment.
- Observed Absent: Field surveys or studies on mosquitoes were conducted but the species has not been detected within the administrative unit.
- Anticipated Absent: These are administrative units where there are no data, and where the species is anticipated to be absent, based on a distance of at least 100 km from units with observations, and unsuitable climatic conditions.
- Unknown: Data from the administrative unit may be available but there are doubts about the identification and/or the status.
No Data: No sampling has been performed and no data on the species are available within the administrative unit.
Vector distribution status changes in terms of spatial units since the previous update
In this update, the current known distribution of the seven priority tick species resulted in a total of 50 new administrative units with presence, and 30 with introductions, with most new information in Montenegro (19 new unit/species presences or introductions), Portugal (12) and Spain (11).
Dermacentor reticulatus
Since the previous update (October 2023), there are seven new administrative units where this species is currently known to be present (five of which in Portugal), and three units where the species was newly reported (marked as introduced).
Hyalomma lusitanicum
Since the previous update (October 2023), there are five units where the species was newly reported (marked as introduced, three of which in Portugal and two in Spain).
Hyalomma marginatum
Since the previous update (October 2023), there are 12 new administrative units where this species is currently known to be present (seven of which in Montenegro), and eight units where the species was newly reported (marked as introduced).
Ixodes persulcatus
Since the previous update (October 2023), there are no new administrative units where this species is currently known to be present or introduced.
Ixodes ricinus
Since the previous update (October 2023), there are 16 new administrative units where this species is currently known to be present (eight of which in Montenegro), and 11 units where the species was newly reported (marked as introduced, seven of which in Portugal).
Ornithodorus erraticus
Since the previous update (October 2023), there are no new administrative units where this species is currently known to be present or introduced.
Rhipicephalus sanguineus
Since the previous update (October 2023), there are 15 new administrative units in eight countries where this species is currently known to be present, and three units in three countries where the species was newly reported (marked as introduced).
Surveillance for ticks
The surveillance maps shows the regions where surveillance activities for ticks were held in Europe and neighbouring regions.
The map Tick surveillance effort over 2015–2019' shows the surveillance effort per administrative area, by highest surveillance type.
The map 'Seasonal active surveillance for ticks over 2017–2019' shows the number of different calendar months in which any active surveillance took place per administrative area.
