Malaria parasites are transmitted primarily through the bite of an infected female Anopheles mosquito.

African sleeping sickness is caused by Trypanosoma brucei gambiense, a protozoan parasite transmitted by the tsetse fly.

Chagas disease is caused by Trypanosoma cruzi, a protozoan parasite transmitted by triatomine bugs.

Visceral leishmaniasis is caused by Leishmania donovani, a protozoan parasite transmitted by sand flies.

Toxoplasmosis is caused by Toxoplasma gondii, a protozoan parasite that can be transmitted through contact with cat feces, undercooked meat, or contaminated soil.

Giardiasis is caused by Giardia lamblia, a protozoan parasite transmitted through contaminated water or food.

Cryptosporidiosis is caused by Cryptosporidium parvum, a protozoan parasite transmitted through contaminated water or food.

Cyclosporiasis is caused by Cyclospora cayetanensis, a protozoan parasite transmitted through contaminated water or food.

Amebiasis is caused by Entamoeba histolytica, a protozoan parasite transmitted through contaminated water or food.

Trichuriasis is caused by Trichuris trichiura, a nematode parasite transmitted through contaminated soil.

Ascariasis is caused by Ascaris lumbricoides, a nematode parasite transmitted through contaminated soil.

Enterobiasis is caused by Enterobius vermicularis, a nematode parasite transmitted through direct contact with an infected person or through contaminated objects.

Hookworm infection is caused by Necator americanus, a nematode parasite transmitted through contaminated soil.

Schistosomiasis is caused by Schistosoma mansoni, Schistosoma haematobium, Schistosoma japonicum, and Schistosoma intercalatum, trematode parasites transmitted through contact with contaminated water.

Filariasis is caused by Wuchereria bancrofti, Brugia malayi, Onchocerca volvulus, and Loa loa, nematode parasites transmitted by mosquitoes, black flies, and deer flies.