Complex sentence: Chagas disease, or American trypanosomiasis, is a tropical parasitic disease caused by the protozoan "Trypanosoma cruzi" and spread mostly by insects known as Triatominae or kissing bugs.
Split into simpler sentences: Chagas disease, or American trypanosomiasis, is a tropical parasitic disease caused by the protozoan "Trypanosoma cruzi". It is spread mostly by insects known as Triatominae or kissing bugs.