Related Experiment Video
Updated: Mar 3, 2026

Sexual Transmission of American Trypanosomes from Males and Females to Naive Mates
Published on: January 27, 2019
Seroprevalence of Trypanosoma cruzi (TC) and risk factors in Colima, Mexico
Oscar Alberto Newton-Sánchez1,2, Francisco Espinoza-Gómez1,2, Valery Melnikov1
1Grupo de Estudio de las Enfermedades Transmisibles, Facultad de Medicina de la Universidad de Colima, Colima, Col., Mexico.
Introduction:
The present study was conducted to estimate the incidence of seropositivity to anti-Trypanosoma cruzi antibodies and analyze potential risk factors in Colima, on the western coast of Mexico.
Methodology:
Longitudinal studies of 209 subjects with negative serology in 1999 for anti-Trypanosoma cruzi antibodies by hemagglutination inhibition test were tested again in 2005. At the same time, 716 children under six years of age were surveyed serologically (total n = 925); the history of Trypanosoma cruzi infection was determined by the same hemagglutination inhibition test. The variables analyzed were age, sex, living in triatomine-infested places, type of community, quality of housing, presence of pets, and number of inhabitants per house.
Results:
Trypanosoma cruzi seropositivity in the period of six years was 22/925 cases, with a point prevalence of 2.73% and an adjusted rate of 7.3/1,000 person-years. The variable living in triatomine-infested areas showed association with seropositivity anti-Trypanosoma cruzi antibodies (RR: 5.5; 95% CI: 1.28-23.5). The remaining variables showed no significant association.
Conclusions:
This study confirms the active transmission of Chagas disease in Mexico´s western-central region, which merits greater epidemiological surveillance and vector control, particularly in localities infested with triatomines.
More Related Videos
Related Concept Videos
Prevalence and Incidence
Prevalence indicates the proportion of individuals in a population who have a specific disease or health...
Factors Affecting the Risk of Infection
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...
Factors Affecting Illness
For instance, risk factors are connected to illness,...
Drug Toxicity: Risk factors
Toxidromes: Clinical Features
Sexually Transmitted Infections

