Rift Valley Fever

The disease usually presents in an epizootic form over large areas of a country following heavy rains and sustained flooding or linked to the construction of irrigation schemes and hydrological dams, which present a suitable breeding sites for vector populations. The disease is characterised by high rates of abortion and neonatal mortality in domestic ruminants. In humans, the disease mainly develops as an influenza-like illness, sometimes with ophthalmic sequelae