Protozoa: | Resistance to chlorine |
Balantidium coli | High |
Blastocystis hominis | High |
Isospora belli | High |
Microsporidia | Moderate |
Toxoplasma gondii | High |
Helminthes: | |
Fasciola spp. | High |
Free-living nematodes (other than Dracunculus medinensis) | High |
Schistosoma spp. | Moderate |