Table 3 shows PCR results for parasite detection in all samples.
Cysts with morphology compatible with Entamoeba were observed
by microscopy in samples S1, S4, B1 and B2; however, the presence
of the pathogenic species E. histolyica, or the other morphologically
similar but not pathogenic species E. dispar and E.moshkovskii has
not been confirmed by PCR in any of the samples analyzed suggesting that observed cysts may belong to other, nonpathogenic
species of Entamoeba.