West Nile virus (WNV) was isolated from the brains of 3 horses that died from encephalitis in February 2006. The horses were from different farms in central Argentina and had not traveled outside the country. This is the first isolation of WNV in South America.

Donkeys belong to the Equidae family and as such are similar to equines in many ways. However, there are a number of significant features peculiar to the donkey that practitioners should be aware of when attempting to investigate and treat respiratory disease. These include differences in anatomy, physiology, pharmacokinetics, disease incidence and morbidity with certain infectious diseases. Th...

One of the most important questions in arbovirology concerns the origin of epidemic Venezuelan equine encephalitis (VEE) viruses; these viruses caused periodic, extensive epidemics/epizootics in the Americas from 1938-1973 (reaching the United States in 1971) but had recently been presumed extinct. We have documented the 1992 emergence of a new epidemic/epizootic VEE virus in Venezuela. Phyloge...