Equines of a ranch, where an epizootic of undiagnosed neurological syndrome was reported in 2009 and 2010, located in the Nabileque Sub-region of the Pantanal, Brazil.

BSQV, Bussuquara virus; CPCV, Cacipacore virus; ILHV, Ilheus virus; ROCV, Rocio virus; SLEV, Saint Louis encephalitis virus; WNV, West Nile virus; IGUV, Iguape virus; YFV, Yellow fever virus; DENV, Dengue virus; ID: Horse identification; -, Not tested.*Equines that showed disease during the epizootic and survived.