GFM Network News


One type of mosquito, the Culex tarsal, spreads the West Nile virus to horses and humans and this species usually appears later in the summer season.

West Nile virus numbers spiked again this summer

The number of cases of this disease in horses rises and falls depending on a complex interplay of factors

Since the first horse was detected with West Nile virus in Canada in 2002, the prevalence of the disease has cycled annually through peaks and troughs. The number of cases in horses initially peaked in 2003 following its introduction, with many fewer cases reported until 2007 when the incidence of the disease spiked once again. […] Read more