By Chagas disease, caused by the protozoan parasite Trypanosoma cruzi, affects some 8 million people worldwide. More than a third develop severe heart or digestive problems with a heightened risk of death.
Chagas disease, caused by the protozoan parasite Trypanosoma cruzi, affects some 8 million people worldwide. More than a third develop severe heart or digestive problems with a heightened risk of death.
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