Elsevier, Veterinary Microbiology, 3-4(152), p. 407-410, 2011
DOI: 10.1016/j.vetmic.2011.05.013
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The circulation of West Nile virus in Portugal was assessed by serological surveys conducted during 2004-2010 in horses and birds. The detection of WNV antibodies in both species in all the years covered by the study as well as the presence of anti-WNV IgM in symptomatic horses that had not traveled outside the country, support the notion that WNV circulates in Portugal.