Identification of anti-protozoal agents

A method for preventing an Apicomplexan parasitic infection, comprising:

• administering to a cell in need of such treatment, an effective amount of an Apicomplexan parasite inhibitor to prevent Apicomplexan parasitic infection in the cell, wherein the Apicomplexan parasite inhibitor is selected from the group consisting of molecules numbered 108296, 244378, 143088, 143267, 144939, 157591, 157808, 156079, 267405, 118793, 137846, 137861, 144146, 115556, 256729, 108343, 156579, 158513, 141852, 235236, 152813, 102260 as depicted in FIGS. 6A–6G and listed in Table 1.