👉 A trypanosoma is a type of parasitic nematode. It infects and kills certain types of worms, such as roundworms, tapeworms, and amastigotes. The parasite contains a single roundworm, called an amastigote, which is found in the body of the worm. Once the amastigote enters the host's bloodstream, it reproduces rapidly, causing the host to become infected with other parasitic worms. This process can