The role of animal grazing in the spread of Chagas disease

Manuel Adrian Acuña-Zegarra*, Daniel Olmos-Liceaga, Jorge X. Velasco-Hernández

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


Chagas disease is an important neglected tropical disease which causes on average about 7000 deaths per year, and an estimated 25 million people risk of acquiring it. This illness is often found in rural areas, which are usually characterized by poverty and presence of animals which act as reservoirs of the disease. Our main objective is to study the effect of animal grazing on the disease levels of the human population. For this purpose, we consider two environments (domestic and wild) where each one has permanent residents, and there is a proportion of animals that move between both environments due to grazing. This movement is modeled through the residence time in each environment. We analyze the proposed model and finally, we discuss the influence of domestic animals residence time on the disease level of human population.

Original languageEnglish
Pages (from-to)19-28
Number of pages10
JournalJournal of Theoretical Biology
StatePublished - 14 Nov 2018

Bibliographical note

Publisher Copyright:
© 2018 Elsevier Ltd


  • Basic reproductive number
  • Domestic animals
  • Residence time
  • Rural areas


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