Figure 1.

Map of St. Kitts indicating villages where schistosomiasis was prevalent in the 1930s and the relevant permanent or semipermanent rivers in the 1930s leading to these villages; the Fountain River, the location of Biomphalaria spp. snails in the 1970s; and Green Hill Estate, the trapping location of the positive African green monkey (Chlorocebus aethiops sabaeus) in 2019. All, but Wingfield, rivers leading to Old Town are now tapped near the source at > 300 m above sea level. However, the ghauts continue to have water during heavy rainfall periods.