3. What is the rate of incidence of Chagas disease? It is estimated that globally, almost 16 to 18 million people get infected with Chagas disease, of which about 50,000 succumb to the infection annually.
4. Once infected with trypanosomiasis will a person develop immunity against it? No one is immune from trypanosomiasis. Even if a person has the disease once he can get re-infected.