EHDV is a virus affecting deer and cattle, and researchers in Trinidad monitored cattle for EHDV for six months after importation from the USA.
The study found all cattle tested positive for EHDV within that time, and specifically identified the circulating serotype as EHDV-6.
Phylogenetic analysis indicated that the Trinidad EHDV-6 strain is closely related to strains from Guadeloupe, Martinique, and the USA, tracing its origins back to Australia around 1966.