Table 2. Main epidemiological characteristics of positive cases with T. cruzi positive serological results Coahuila coal mining region.

Progressive number	Age	Sex	Detection	Diagnosis	Previous blood transfusions	Travel to endemic zones	Recognition of triatomines
1	42	M	Transfusion center	Asymptomatic	Negative	Negative	Negative
2	53	M	Transfusion center	Asymptomatic	Negative	Negative	Negative
3	35	M	Transfusion center	Asymptomatic	Negative	Negative	Negative
4	26	M	Transfusion center	Asymptomatic	Negative	Negative	Negative
5	25	M	Transfusion center	Asymptomatic	Negative	Negative	Negative
6	76	M	Hospital	Cardiac Failure	Negative	Negative	Negative
7	60	F	Hospital	Cardiac Failure	Negative	Negative	Negative
8	76	M	Home	Dilated Cardiomyopathy	Negative	Negative	Negative
9	60	F	Home	Dilated Cardiomyopathy	Positive 2 years ago	Negative	Negative
10	61	F	Home	Dilated Cardiomyopathy	Negative	Negative	Negative
11	5	F	Home	Asymptomatic	Negative	Negative	Negative