Related Experiment Video
Updated: Aug 9, 2026

Sexual Transmission of American Trypanosomes from Males and Females to Naive Mates
Published on: January 27, 2019
Cardiac morbidity due to Chagas' disease in a rural community in Bolivia
T Weinke1, K Ueberreiter, M Alexander
1Robert Koch-Institute, Fachgebiet Klinische Parasitologie, Berlin, West Germany.
Insights
Chagas
Area of Science:
- Infectious Diseases
- Cardiology
- Public Health
Background:
- Chagas' disease, caused by Trypanosoma cruzi, is a significant public health concern.
- Cardiac morbidity is a major complication of chronic Chagas' disease.
Purpose of the Study:
- To assess the prevalence of cardiac morbidity in a rural Bolivian community.
- To investigate the association between Trypanosoma cruzi infection, cardiac abnormalities, and housing conditions.
Main Methods:
- Serological testing for Trypanosoma cruzi antibodies in 104 individuals.
- Electrocardiogram (ECG) analysis to detect cardiac abnormalities.
- Assessment of domiciliary Triatoma infestans infection rates and housing quality.
Main Results:
- 66% of individuals were seropositive for Trypan-panosoma cruzi.
- 30% of seropositive individuals exhibited ECG abnormalities, compared to 6% of seronegatives.
- Significant association found between seropositivity and substandard housing; 56% of Triatoma infestans were infected.
Conclusions:
- High prevalence of Trypan-panosoma cruzi infection and associated cardiac morbidity in the studied community.
- Substandard housing is linked to increased risk, highlighting the role of Triatoma infestans.
- House improvement and health education are crucial for Chagas' disease prevention.
Abstract:
The prevalence of cardiac morbidity due to Chagas' disease was assessed in a rural community in Central Bolivia. Sixty-nine of 104 persons (66%) were seropositive to Trypanosoma cruzi by two serological methods. Two of 35 (6%) seronegative individuals presented with modest ECG alterations (left anterior hemiblock), but 21 of 69 (30%) seropositives showed modest and severe abnormalities (6 complete right bundle branch block, 2 polyfocal or frequent extrasystoles, 9 ischaemic ST alterations). A high percentage (56%) of domiciliary Triatoma infestans was infected with T. cruzi. There was a significant association between seropositivity and substandard housing. Priority preventive measures should thus include house improvement (to reduce bug infestation) and health education.
More Related Videos
Related Concept Videos
Imbalances in Cardiac Output
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
Cardiomyopathy II: Dilated Cardiomyopathy
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Cardiomyopathy IV: Restrictive Cardiomyopathy
Cardiomyopathy V: Interprofessional Care
American Trypanosomiasis

