Evolution of incidence and geographical distribution of Chagas disease in Mexico during a decade (2007–2016)

Abstract

Chagas disease, whose aetiological agent is the protozoan Trypanosoma cruzi, mainly occurs in Latin America. In order to know the epidemiology and the geographical distribution of this disease in Mexico, the present work analyses the national surveillance data (10 years) for Chagas disease issued by the General Directorate of Epidemiology (GDE). An ecological analysis of Chagas disease (2007–2016) was performed in the annual reports issued by the GDE in Mexico. The cases and incidence were classified by year, state, age group, gender and seasons. A national distribution map showing Chagas disease incidence was generated. An increase of new cases was identified throughout the country (rates from 0.37 to 0.81 per 100 000 inhabitants). Of the total cases accumulated (7388), the major cases were attributed to the states of Veracruz, Chiapas, Quintana Roo, Oaxaca, Morelos and Yucatán. The analysis per age groups and gender revealed that, in most age groups, the incidence was higher in the male population. The most number of cases was identified in spring and summer; a direct relationship between the environmental temperature increase and the number of new cases was identified. The analysis showed that the rate of Chagas disease increased presumably due to state programmes; the search for new cases has expanded and we speculate that the disease is associated with occupational activities. These results summarise and recall how important it is to implement the monitoring of Chagas disease mainly in south states of the Mexican Republic in order to implement strategies to control this disease.

Trends of Seroprevalence of Chagas´s diseases in healthy blood donors, solid organ donors and heart transplant recipients: experience of a single health care center in Colombia.

“…However, several studies have shown a higher frequency of infection in men aged 25-49 years, not only in general population serosurveys but also in reactivity studies in blood donors. This suggests that there seems to be a differential risk that some authors have explained from an occupational point of view [13,[25][26][27]. As for women of childbearing age, the collection of reactive sera is very timely in preventing congenital disease, taking into account that this represents up to 5% of all forms of transmission [2,6].…”

Morbidity Trends and Risk of Tuberculosis: Mexico 2007–2017

“…The design and data collection study were carried out according to Ibáñez-Cervantes et al [15]. Briefly, the monthly and annual reports of cases of pulmonary and MTB between 2007 and 2017 were published by the GDE and were analyzed in an observational and retrospective manner.…”

“…An analysis of variance (ANOVA) was also calculated in order to evaluate significant differences over time ( p =0.05), per data/year and month. A national distribution map showing the pulmonary and MTB incidence during the analyzed period was generated [15].…”

Multiple Discrete Typing Units of Trypanosoma cruzi Infect Sylvatic Triatoma dimidiata and Panstrongylus rufotuberculatus in Southeast Mexico

“…The presence of infected vector and human infection with cases of Chagasic heart disease has been reported. [9][10][11] Additionally, previous studies demonstrated the presence of different DTUs (TcI-TcV) in domiciliated vectors in Orizaba and Cordoba, both cities in the central part of Veracruz. 12 However, the presence of T. cruzi DTUs in sylvatic vectors has not been studied.…”