“…Considered the gold standard method by the World Health Organization (WHO 1993), the Kato-Katz technique has superior sensitivity in comparison to other parasitological techniques for S. mansoni eggs (Chaves et al 1979, Santos et al 2005, Enk et al 2008. However, this technique becomes less efficient when the specimens contain a small amount of eggs, as in post-treatment situations and low endemicity areas (De Vlas & Gryseels 1992, Engels et al 1997, Kongs et al 2001, Pontes et al 2003, Enk et al 2008.…”