Frequency of positive and negative infection for <i>Schistosoma mansoni</i> and <i>S. haematobium</i> infected people from Ghana evaluated by Kato-Katz (KK), haematuria and polymerase chain reaction (PCR).

Combined PCR results mentioned at the bottom. * KK = Stool examination. ** Haematuria = Blood in urine. *** The single false negative was repeated with several extractions. There was no amplification detected.