Intradermal Challenge of Icelandic Horses in Norway and Iceland with Extracts of Culicoides spp.

A skin test survey was carried out in Icelandic horses in Norway and Iceland using extracts of Culicoides spp. as antigen. Eleven horses with recurrent seasonal dermatitis reacted with an immediate hypersensitivity response to intradermal challenge with antigen. All except one of thirty-three clinic...

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Bibliographic Details
Published in:Acta Veterinaria Scandinavica
Main Authors: Larsen, Hans Jorgen, Bakke, Svein Halvard, Mehl, Reidar
Format: Text
Language:English
Published: BioMed Central 2021
Subjects:
Online Access:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8161629/
http://www.ncbi.nlm.nih.gov/pubmed/3256230
https://doi.org/10.1186/BF03548623
Description
Summary:A skin test survey was carried out in Icelandic horses in Norway and Iceland using extracts of Culicoides spp. as antigen. Eleven horses with recurrent seasonal dermatitis reacted with an immediate hypersensitivity response to intradermal challenge with antigen. All except one of thirty-three clinically normal horses in Norway showed a negative response in skin tests. These findings indicate that Culicoides spp. may be the major cause of the disease in Norway. Only one of the 110 horses tested in Iceland showed any skin test reaction (weak), demonstrating that the horses were not sensitized to Culicoides allergen. The disease has never been reported in Iceland.