Article (Transfusion -- March 8, 2012): The United States Trypanosoma cruzi Infection Study: Evidence for Vector-borne Transmission of the Parasite That Causes Chagas Disease Among United States Blood Donors.
The ALS Association says the average lifespan of someone diagnosed with the condition is between two and five years. More than 50 percent make it past year three. Twenty percent make it past year five. From there, the number plummets. Less than 5 percent make it past two decades.
ALS seems affecting men more frequently than women (ratio 1.4:1.0) [1, 6] and the age class with higher risk is 65â74. Prognosis is about 2â3 years from the beginning of the disease, though some 12â15 years survival cases have been observed, mainly in the older age classes [7,8,9,10,11].