| human infection and risk of transmission of chagas disease in hidalgo state, mexico. | new zones with risk of infection for chagas disease were reported in san antonio tezoquipan, caltimacan, and el ahorcado in the hidalgo state of mexico. antibodies to trypanosoma cruzi were detected by enzyme-linked immunosorbent assay and indirect hemagglutination assay in human serum samples. study subjects were also given an electrocardiogram. trypanosoma cruzi was isolated from triatomines collected and its virulence was determined in balb/c mice. seropositive persons were found in the three ... | 2007 | 17297042 |
| risk factors associated with triatomines and its infection with trypanosoma cruzi in rural communities from the southern region of the state of mexico, mexico. | trypanosoma cruzi prevalence in triatomines and risk factors associated to the presence of the insect were studied in 990 rural houses in the southern region of the state of mexico, mexico. in each house, triatomines were collected, and information related to house construction material was obtained. t. cruzi infection was diagnosed in all triatomines. a primary screening was performed using 2 x 2 contingency tables of exposure variables. all variables with p <or= 0.20 were analyzed by logistic ... | 2010 | 20064995 |