“…In Mecha North West Ethiopia, 46.1% Helix, 23.7% Lymnaea, 13.2% Bulinus, 9.2% Planorbin, and 7.9% Oncomelania (40) was reported. In Middle Paranapanema River region of São Paulo, Brazil, of the 10,722 snails collected, 86.7% were in the Planorbidae family (75.5% Biomphalaria and 11.2% Drepanotrema) and 13.3% were other non-Planorbidae species (Lymnaea, Melanoides, Physa and Pomacea)(41). This variation might be due to seasonality of snail abundance and freshwater snails are generally encountered in freshwater body that is polluted with human and animal excreta.On the other hand, this nding was in contrast when compared to studies carried out in Kisumu City, western Kenya, which reported out of 1,059 snails collected, 407 (38.4%) were putatively identi ed as B. sudanica,425(40.1%) as B. pfeifferi and 227(21.5%) as Bulinus globosus(42).…”