As WNV is vector-borne and non-contagious between horses, biosecurity measures should be directed at:
a) effectively managing potential mosquito breeding areas, which in particular includes removing and/or treating accumulations of stagnant or standing water
b) prevention of mosquito biting by use of insecticide treated meshes on horse stabling
c) application of insect repellent topical treatments directly onto horses
d) applying physical horse coverings such as blankets with head and neck protection
People who ride horses in WNF areas are recommended to wear long sleeves and trousers and hats and to apply topical insect repellent to exposed areas of skin on hands, heads and necks.