| incidence of trypanosoma cruzi infection in two guatemalan communities. | the prevalence of human infection by trypanosoma cruzi was assessed using an enzyme-linked immunosorbent assay (elisa) in a serological survey in 1998 of 2 rural communities (smh and ps) in guatemala. in smh (department of zacapa), where rhodnius prolixus was the principal vector, the seroprevalence amongst 373 people tested was 38.8%. in ps (department of santa rosa), where the main vector was triatoma dimidiata, 8.9% of the 428 people tested were seropositive. the overall prevalence of seropos ... | 2002 | 11925991 |