| Pathogen | Drinking Water | Case Reports (Patients) |
| Protozoa | References | |
| Acanthamoeba spp | Taher et al. [27] | Taher et al. [27] |
| Cryptosporidium hominis/parvum | Elfadaly et al. [28] | Shehata et al. [32] |
| Entamoeba histolytica | Elfadaly et al. [28] | El-Badry et al. [33] |
| Giardia intestinalis | Elfadaly et al. [28] | Shehata et al. [32] |
| Naegleria fowleri | Abd El Wahab et al. [29] | - |
| Toxoplasma gondii | Elfadaly et al. [28] | Shehata et al. [32] |
| Helminthes | ||
| Strongyloides stercoralis | El-Badry et al. [30] | El-Shazly et al. [34] |
| Enterobius vermicularis | Radwan et al. [31] | El-Shazly et al. [34] |