Dynamics of S. haematobium egg output and associated infection parameters in two groups of children in southern Côte d’Ivoire after a single oral dose of praziquantel (40 mg/kg). Results of urine filtration, reagent strip testing and visual examination of urine samples during the 62-day follow-up period, among 90 school-aged children with a parasitologically confirmed S. haematobium infection: (a) Frequency (%) of children with S. haematobium eggs in urine; (b) arithmetic mean (AM) egg counts per 10 ml of urine; (c) geometric mean (GM) egg counts per 10 ml of urine. Results are shown for each sampling day (dots) and summarised in weekly intervals (bars). (d) Weekly results of reagent strip testing and visual examination. Children were considered positive for a specific parameter during each follow-up week if they had at least one positive test result on one sampling day during the respective 7-day period.