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In Central America, vector control programs have significantly reduced transmission; however, certain regions, such as Comapa municipality, department of Jutiapa, Guatemala, continue to experience persistent\n                      <jats:italic>T. dimidiata<\/jats:italic>\n                      infestation. This study presents a 10-year follow-up assessment of triatomine infestation,\n                      <jats:italic>T. cruzi<\/jats:italic>\n                      infection and acute Chagas disease cases after an eco-bio-social intervention.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      Between June and August 2022, entomological surveys were conducted in four communities of Comapa municipality. Seventy-six households were systematically searched for triatomines using the one-person hour method. Triatomines were collected and processed for\n                      <jats:italic>T. cruzi<\/jats:italic>\n                      detection using real-time PCR (qPCR), and blood meal analysis was performed to assess host feeding patterns. Dog samples and environmental DNA from household surfaces were also processed for\n                      <jats:italic>T. cruzi<\/jats:italic>\n                      detection. Additionally, surveillance for acute Chagas disease cases was carried out in collaboration with the Ministry of Health.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Persistent household infestation by\n                      <jats:italic>T. dimidiata<\/jats:italic>\n                      was observed across all four communities, with infestation rates ranging from 17% to 38% and colonization levels ranging from 9% to 29%. The mean household triatomine density remained low, suggesting a possible reduction in transmission risk. A total of 86 triatomines were collected, of which 26% tested positive for\n                      <jats:italic>T. cruzi<\/jats:italic>\n                      (all TcI strain). Amplicon deep-sequencing analysis of the blood meals from triatomines identified seven vertebrate species and one insect family as hosts upon which triatomines had previously fed, with chickens and dogs being the most common blood meal sources (occurring in 85% of triatomines). Of the 132 dogs processed, 22% were positive for\n                      <jats:italic>T. cruzi<\/jats:italic>\n                      (all TcI strain). Two acute Chagas disease cases in children were detected in the surveillance period, including one child in 2015 who remained seropositive in 2022, emphasizing the need for continued surveillance.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>\n                      Despite the multiple interventions that have been carried out for over a decade in Comapa municipality,\n                      <jats:italic>T. dimidiata<\/jats:italic>\n                      infestation remains high in the area, with sustained evidence of acute Chagas disease in humans, necessitating continued vector control efforts. The persistence of\n                      <jats:italic>T. cruzi<\/jats:italic>\n                      transmission among triatomines and dogs and the predominant role of chickens and dogs in supporting the vector population highlight the need for innovative control strategies, including those that target domestic animals, to mitigate Chagas disease risk.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Graphical Abstract<\/jats:title>\n                  <\/jats:sec>","DOI":"10.1186\/s13071-025-06897-7","type":"journal-article","created":{"date-parts":[[2025,7,4]],"date-time":"2025-07-04T08:13:45Z","timestamp":1751616825000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Triatoma dimidiata, domestic animals and acute Chagas disease: a 10-year follow-up after an eco-bio-social intervention"],"prefix":"10.1186","volume":"18","author":[{"given":"Jose G.","family":"Juarez","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrea M.","family":"Moller-Vasquez","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mar\u00eda","family":"Granados-Presa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pamela","family":"Pennington","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Norma","family":"Padilla","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sujata","family":"Balasubramanian","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lisa D.","family":"Auckland","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elsa","family":"Berganza","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Estuardo Alvarado","family":"Liberato","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Henry","family":"Esquivel","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ranferi","family":"Trampe","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Louisa A.","family":"Messenger","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Celia","family":"Cord\u00f3n-Rosales","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gabriel L.","family":"Hamer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarah A.","family":"Hamer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,7,4]]},"reference":[{"key":"6897_CR1","unstructured":"WHO. 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It was also reviewed by the Institutional Animal Care and Use committee of UVG (CEUCA-UVG) and was approved under protocol number I-2022(3)A. Additionally, it was approved by the Texas A&M University\u00b4s Institutional Animal Care and Use Committee (IACUC 2022-0001 CA). Human acute Chagas disease cases were part of the national surveillance program of the Guatemalan Ministry of Health. All information shared with UVG had no personal identifiers that could be link to patients. Verbal consent was obtained from homeowners for entomological surveillance.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethic approval and consent to participate"}},{"value":"Signed consent was obtained from the parent of the acute Chagas disease case, for eye image publication.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"253"}}