Volume 7 Supplement 1

Proceedings of the 1st Conference on Neglected Vectors and Vector-Borne Diseases (EurNegVec): with Management Committee and Working Group Meetings of the COST Action TD1303

Open Access

Mapping and modeling Dirofilaria infections in Europe

  • L Rinaldi1, 4Email author,
  • V Musella2,
  • G Marzatico1,
  • M Mortarino3,
  • Genchi Claudio3 and
  • G Cringoli1, 4
Parasites & Vectors20147(Suppl 1):O20

https://doi.org/10.1186/1756-3305-7-S1-O20

Published: 1 April 2014

Climate change and increasing temperatures are a global phenomenon that can influence the dynamics of a number of hematophagous arthropods, vectors of pathogens with importance in human and veterinary medicine. In fact, climatic changes, together with an increase in the movement of dogs across Europe, have caused an increase in the geographical range of Dirofilaria immitis and D. repens infections. A Geographic Information System based on thermal regimen was constructed to identify areas potentially suitable for Dirofilaria transmission in Europe. These models are based on evidence that: i) there is a threshold of 14 °C below which Dirofilaria development will not proceed in mosquitoes; ii) there is a requirement of 130 growing degree-days for larvae to reach infectivity, and; iii) there is a maximum life expectancy of 30 days for a mosquito vector. The output of these models predicted that the summer temperatures (with peaks in July and August) are sufficient to facilitate extrinsic incubation of Dirofilaria even at high latitudes. Recently, an additional model was constructed to verify the influence of temperature in the course of three decades (1980-1989, 1990-1999 and 2000-2012) on the risk of infection by Dirofilaria in Italy. The results showed an expected increasing trend of temperatures, an increase of the Dirofilaria generation numbers into the mosquitoes and a significant extension of the infection risk from 5-6 months (1980-1989) to 6.5 months (1990-1999), up to more than 7 months (2000-20012). These findings show that geospatial tools are very useful for mapping, monitoring, forecasting and surveillance of both heartworm and subcutaneous dirofilariasis.

Authors’ Affiliations

(1)
Unit of Parasitology and Parasitic Diseases, Department of Veterinary Medicine and Animal Productions, University of Naples Federico II
(2)
Department of Health Sciences, University Magna Graecia of Catanzaro
(3)
Department of Veterinary Science and Public Health, University of Milan
(4)
CIRPAR

Copyright

© Rinaldi et al.; licensee BioMed Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.

Advertisement