Mario J. Grijalva, Ph.D.
 

Access publications by Grijalva MJ in Pubmed

1. Bates, B.R., Villegas, A. & Grijalva, M.J. (2020). Knowledge, attitudes, and practices towards COVID-19 among Colombians during the outbreak: an online cross-sectional survey. Journal of Communication in Healthcare, DOI: 10.1080/17538068.2020.1842843. Rol: Contributing Author. SJR 0,241, Q3.
   
   

2. Schwabl, P., Maiguashca Sánchez, J., Costales, J. A., Ocaña-Mayorga, S., Segovia, M., Carrasco, H. J., . . . Grijalva, M. J. , ., Llewellyn, M. S. (2020). Culture-free genome-wide locus sequence typing (GLST) provides new perspectives on Trypanosoma cruzi dispersal and infection complexity. PLOS Genetics 16(12), e1009170. doi:10.1371/journal.pgen.1009170. Rol: Contributing Author. SJR 3,744, Q1.
   
   

3. Erazo CE, Erazo CV, Grijalva MJ , Moncayo AL. 2021. Knowledge, attitudes and practices on influenza vaccination during pregnancy in Quito, Ecuador. BMC Public Health. 21(1):72. doi: 10.1186/s12889-020-10061-4.PMID: 33413252. SJR:1.23 and Q1.
   
   

4. A. W. Otieno, J. Roark, M. L. Khan, S. Pant, M. J. Grijalva & Scott Titsworth. 2021. The kiss of death — Unearthing conversations surrounding Chagas disease on YouTube, Cogent Social Sciences, 7:1, DOI: 10.1080/23311886.2020.1858561 SJR: 0.295 and Q2.
   
   

5. Carlos Talavera-Lopez, Louisa A. Messenger, Michael D. Lewis, Matthew Yeo, João Luís Reis-Cunha, Gabriel Machado Matos, Daniella C. Bartholomeu, José E. Calzada, Azael Saldaña, Juan David Ramirez, Felipe Guhl, Sofia Ocaña-Mayorga, Jaime A. Costales, Rodion Gorchakov, Kathryn Jones, Melissa S. Nolan, Santuza M. R. Teixeira, Hernan José Carrasco, Maria Elena Bottazzi, Peter J. Hotez, Kristy O. Murray, Mario J. Grijalva, Barbara Burleigh, Edmundo C. Grisard, Michael A. Miles and Björn Andersson. 2021. Repeat-Driven Generation of Antigenic Diversity in a Major Human Pathogen, Trypanosoma cruzi. Frontiers in Cellular and Infection Microbiology. 11:614665; DOI 10.3389/fcimb.2021.614665. PMID: 33747978
   
   

6. Bates BR, Tami A, Carvajal A, Grijalva MJ. 2021. Knowledge, attitudes, and practices towards COVID-19 among Venezuelans during the 2020 epidemic: An online cross-sectional survey. PLoS One. 2021 Apr 15;16(4):e0249022. doi: 10.1371/journal.pone.0249022. eCollection 2021.PMID: 33857159 SJR: 0.99 and Q1.
   
   

7. Alonso-Padilla, J., López, M. C., Esteva, M., Zrein, M., Casellas, A., Gómez, I., . . . Grijalva, M.J. . . . . Viotti, R. 2021. Serological reactivity against T. cruzi-derived antigens: Evaluation of their suitability for the assessment of response to treatment in chronic Chagas disease. Acta Tropica, 221, 105990. doi: https://doi.org/10.1016/j.actatropica.2021.105990. Rol: Contributing Author. SJR: 0.969 and Q2.
   
   

8. Ocaña-Mayorga S, Bustillos JJ, Villacís AG, Pinto CM, Brenière SF, Grijalva M.J. 2021. Triatomine Feeding Profiles and Trypanosoma cruzi Infection, Implications in Domestic and Sylvatic Transmission Cycles in Ecuador. Pathogens. 10(1):E42. doi: 10.3390/pathogens10010042. PMID: 33430264 SJR: 0.984 and Q2.
   
   

9. Alvear Durán, S., Sanchez-Del-Hierro, G., Gomez-Correa, D., Enriquez, A., Sanchez, E., Belec, M., Casapulla, S., Grijlava, M. J. & Shubrook, J. H. 2021. A pilot of a modified diabetes prevention program in Quito, Ecuador. Journal of osteopathic medicine, 10.1515/jom-2020-0175. Advance online publication. https://doi.org/10.1515/jom-2020-0175. PMID: 34668365. Rol: Contributing Author. SJR: 0.345 and Q2.
   
   

10. Bates BR, Grijalva DA, Grijalva MJ. 2021. Un enfoque participativo centrado en la cultura. Una forma alternativa de definir el desarrollo en el espacio rural de Ecuador. Escribanía Vol. 19 Núm 1. (24). https://doi.org/10.30554/escribania.v19i1.4328. Latin Index
    
    

11. Benjamin R. Bates, Daniela A. Grijalva, Paul A. Jacho, C. Xavier Barriga-Abril & Mario J. Grijalva. 2021. Participatory mural painting and identifying resources in Asset Based Community Development research: a case in rural Ecuador, Qualitative Research Reports in Communication, DOI: 10.1080/17459435.2021.1940253. Q3
    
    

12. Ocana-Mayorga, S., Bustillos, J., Villacís, A., Moncayo, A., Yumiseva, C., Brenière, S., & Grijalva, M.. 2021. Human Blood Meals in Sylvatic Triatomines Challenges Domestic-Centered Strategies for Prevention of Trypanosoma cruzi Transmission in Ecuador. The American journal of tropical medicine and hygiene, tpmd201312. Advance online publication. https://doi.org/10.4269/ajtmh.20-1312. Rol: Corresponding Author. PMID: 34695785. SJR: 1,015, Q2.
    
    

13. Sherwani SI, Bates BR, Grijalva MJ.. 2021. Charitable Giving in the Context of Unfamiliar Organizations: The Effectiveness of Construal Level Theory in Predicting Donating Intentions and Antecedents. Southern Communication Journal 86 (5), 472-486.https://doi.org/10.1080/1041794X.2021.1929434. Q2
    
    

14. Luis E. Hernandez-Castro, Anita G. Villacís, Arne Jacobs, Bachar Cheaib, Casey C. Day, Sofía Ocaña-Mayorga, Cesar A. Yumiseva, Antonella Bacigalupo, Björn Andersson, Louise Matthews, Erin L. Landguth, Jaime A. Costales, Martin S. Llewellyn, Mario J. Grijalva. 2022. Population genomics and geographic dispersal in Chagas disease vectors: Landscape drivers and evidence of possible adaptation to the domestic setting. PLOS Genetics 18(2): e1010019. https://doi.org/10.1371/journal.pgen.1010019. PMID: 35120121
    
    

15. Cristina Valderrama-Martínez, Benjamin R. Bates & Mario J. Grijalva. 2022 Learning Communication Channel Selection Lessons From The Earthquake In Bahía De Caráquez, Ecuador, 2016, Southern Communication Journal, DOI: 10.1080/1041794X.2022.2037062
    
    

16. Haile, Z.T., Ruhil, A., Bates, B.R., Hall, O., Grijalva M.J. 2022. Correlates of Covid-19 Vaccine Acceptance among Residents of Ohio: A Cross-sectional Study. BMC Public Health 22, 226. https://doi.org/10.1186/s12889-022-12661-8. PMID: 35114965
    
    

17. Bates BR, Villegas-Botero A, Costales JA, Moncayo AL, Tami A, Carvajal A, Grijalva MJ. COVID-19 Vaccine Hesitancy in Three Latin American Countries: Reasons Given for Not Becoming Vaccinated in Colombia, Ecuador, and Venezuela. Health Commun. 2022 Feb 14:1-11. doi: 10.1080/10410236.2022.2035943. Epub ahead of print. PMID: 35164624
    
    

18. Brusnahan A, Carrasco-Tenezaca M, Bates BR, Roche R, Grijalva MJ Identifying health care access barriers in southern rural Ecuador. Int J Equity Health. Apr 22;21(1):55. doi: 10.1186/s12939-022-01660-1.PMID: 35459253. Role. Corresponding Author.
    
    

19. Mora-Criollo P, Basu R, Qian Y, Costales JA, Guevara-Aguirre J, Grijalva MJ, Kopchick JJ. 2022. Growth hormone modulates Trypanosoma cruzi infection in vitro. Growth Horm IGF Res. 2022 Jun;64:101460. doi: 10.1016/j.ghir.2022.101460. Epub 2022 Apr 15.PMID: 35490602. Role. Contributing Author.
    
    

20. Grijalva MJ , Moncayo AL, Yumiseva CA, Ocaña-Mayorga S, Baus EG, Villacís AG.2022. Evaluation of Selective Deltamethrin Application with Household and Community Awareness for the Control of Chagas Disease in Southern Ecuador. J Med Entomol. 2022 Jul 13;59(4):1421-1433.doi:10.1093/jme/tjac050.PMID: 35604412. Role. First Author
    
    

21. Nieto-Sanchez, C., Hatley, D.M., II, Grijalva, M.J., Peeters Grietens, K, Bates, B.R. (2022) Communication in Neglected Tropical Diseases' elimination: A scoping review and call for action. PLoS Negl Trop Dis 16(10): e0009774. https://doi.org/10.1371/journal.pntd.0009774. Autor de correspondencia: Claudia Nieto-Sanchez. SJR: 1,45, Q1.
    
    

22. Bates, B.R and Grijalva, M.J. (2022) Knowledge, attitudes, and practices towards monkeypox during the 2022 outbreak: An online cross-sectional survey among clinicians in Ohio, USA. Journal of Infection and Public Health 15(12): 1459-1465. https://doi.org/10.1016/j.jiph.2022.11.004. Autor de correspondencia: Benjamin R. Bates. SJR: 1,277, Q1.
    
    

23. Madrid Miles CI, Bates BR, Casapulla SL, Grijalva, MJ 2022. Social support in rural communities in Manabi province, Ecuador. Rural Remote Health. 2022 Nov;22(4):6957. doi: 10.22605/RRH6957. Epub 2022 Nov 3. PMID: 36328965
    
    

24. Grijalva, MJ, Villacís AG, Ocaña-Mayorga S, Yumiseva CA, Nieto-Sanchez C, Baus EG, Moncayo AL. 2022. Evaluation of the Effectiveness of Chemical Control for Chagas Disease Vectors in Loja Province, Ecuador. Vector Borne Zoonotic Dis. 2022 Sep;22(9):449-458. doi: 10.1089/vbz.2021.0089. Epub 2022 Aug 31. PMID: 36044033
    
    

25. Bates, B.R., Sharma, D., Baus, E.G., Grijalva, M.J., Hansel, Gretel, and the Chinchorro: A Live Performance Entertainment Education Approach to Chagas Disease in Rural Ecuador. Southern Communication Journal, 2022, 87(4), pp. 339-347
    
    

26. Bates, B., Grijalva, D., & Grijalva, MJ. 2022. Un enfoque participativo centrado en la cultura. Una forma alternativa de definir el desarrollo en el espacio rural de Ecuador. Escribanía. https://doi.org/10.30554/escribania.v19i1.4328
    
    

27. Mora-Criollo P, Carrasco-Tenezaca M, Casapulla S, Bates BR, Grijalva, MJ. 2023. A qualitative exploration of knowledge of Chagas disease among adolescents in rural Ecuador. Rural Remote Health. 2023 Jan;23(1):6796. doi: 10.22605/RRH6796. Epub 2023 Jan 3. PMID: 36596293
    
    

28. Bates BR, Carrasco-Tenezaca M, Mendez-Trivino AM, Mendoza LE, Nieto-Sanchez C, Baus EG, Grijalva, MJ. 2023. Identifying Barriers and Facilitators for Home Reconstruction for Prevention of Chagas Disease: An Interview Study in Rural Loja Province, Ecuador. Trop Med Infect Dis. 2023 Apr 18;8(4):228. doi: 10.3390/tropicalmed8040228.PMID: 37104353
    
    

29. Mora-Criollo P, Basu R, Qian Y, Funk K, Bell S, Young JA, List EO, Costales JA, Guevara-Aguirre J, Grijalva, MJ, Kopchick J. 2023. High growth hormone serum partially protects mice against Trypanosoma cruzi infection. JJ.FEBS Open Bio. 2023 Jul;13(7):1346-1356. doi: 10.1002/2211-5463.13627. PMID: 37163287
    
    

30. Caridi TL, Mariño-Polo F, Farra CG, Mingus AM, Memon A, Grijalva MJ, Bates BR. 2024. Health literacy & Chagas disease knowledge: A cross-sectional study in Southern Loja Province, Ecuador. PEC Innov. May 6;4:100287. doi: 10.1016/j.pecinn.2024.100287. eCollection 2024 Dec.PMID: 38799258
    
    

31. Sereno D, Oury B, Grijalva, MJ, 2024. Chagas Disease across the Ages: A Historical View and Commentary on Navigating Future Challenges. Microorganisms. Jun 6;12(6):1153. doi: 10.3390/microorganisms12061153.PMID: 38930535
    
    

32. Villacís JF, López-Rosero A, Bustillos JJ, Cadena M, Yumiseva CA, Grijalva, MJ, Villacís AG. 2024. Bacterial microbiota from the gut of Rhodnius ecuadoriensis, a vector of Chagas disease in Ecuador's Central Coast and Southern Andes. Front Microbiol. Sep 23;15:1464720. doi: 10.3389/fmicb.2024.1464720. eCollection 2024.PMID: 39376708
    
    

33. Tello B, Mendoza-Gordillo MJ, Moreano M, Bates BR, Quinn K, Rogel C, Grijalva, MJ 2024. Nurturing care: perceptions and practices of caregivers for children under five in the Ecuadorian highlands - a qualitative study. Front Public Health. Nov 11;12:1373896. doi: 10.3389/fpubh.2024.1373896. eCollection 2024.PMID: 39588162
    
    

34. CE Crespo-Proaño, MJ Grijalva-Cobo, RF Chiriboga-Ponce. 2025. Detección de citomegalovirus en donantes de sangre asintomáticos. Revista chilena de infectología 42 (1), 21-26
    
    

35. Matías Cadena Cárdenas, Andrea López Rosero, Juan José Bustillos, Juan Francisco Villacís, César A Yumiseva, Mario J Grijalva, Anita Gabriela Villacís Salazar. 2025. First report of the bacterial microbiota in the gut of Panstrongylus chinai vector of Chagas disease in southern Ecuador. Revista Ecuatoriana de Medicina y Ciencias Biológicas: REMCB 46 (1), 5
    
    

36. Lara Á, Hernández ML, Yumiseva CA, Grijalva MJ, Villacís AG. 2025 Hybrids versus parental species: insights from wing phenotype similarities and differences in triatomine insects. Front Insect Sci. Mar 11;5:1547963. doi: 10.3389/finsc.2025.1547963. eCollection 2025.PMID: 40134757
    
    

37. Wilca-Cepeda A, López-Rosero A, Yumiseva CA, Grijalva, MJ, Villacís AG. 2025. Arbovirus Detection in Aedes aegypti Mosquitoes in Manabí, Ecuador. Pathogens. May 1;14(5):446. doi: 10.3390/pathogens14050446.PMID: 40430766
    
    

38. Esparza-Carate J, Santillán-Guayasamín S, Yumiseva CA, Bustillos JJ, Grijalva, MJ, Denis S, Villacís AG. 2025. Anthropogenic influences on Rhodnius ecuadoriensis populations and nesting behaviors in sylvatic areas of southern Ecuador. BMC Infect Dis. Jun 6;25(1):799. doi: 10.1186/s12879-025-11175-z.PMID: 40481413
    
    

39. Masson Palacios I, Vinueza-Fernandez I, Iñiguez-Jiminez SO, Grijalva, MJ, Bates BR. 2025. Predictors of Low Back Pain Risk Among Farmers in Rural Communities of Loja, Ecuador. Int J Environ Res Public Health. May 31;22(6):885. doi: 10.3390/ijerph22060885.PMID: 40566311
    
    

40. Hernández C, Salgado-Roa FC, Pardo-Diaz C, Aristeu da Rosa J, Oliveira J, Galvão C, Freitas SPC, Calzada JE, Garcia L, Grijalva, MJ, Villacís AG, Carrasco H, Segovia M, Gomez Hernandez C, Urbano P, Cantillo-Barraza O, Guhl F, Carranza JC, Alevi KCC, Sandoval C, Paniz-Mondolfi A, Vallejo G, Salazar C, Ramírez JD. 2025. Multilocus analysis uncovers the evolution of the Rhodniini tribe, vectors of Trypanosoma cruzi. Sci Rep. Jul 1;15(1):20401. doi: 10.1038/s41598-025-03789-9.PMID: 40595761
    
    

41. Sereno D, Kernif T, Leon R, Kahime K, Guernaoui S, Harkat C, Grijalva, MJ, Hamarsheh O, Villacis AG, Medrouh B, Vasconcelos Dos Santos T, Beniklef R, Eddaikra N, Holzmuller P. 2025. Mapping unconventional Leishmania in human and animal leishmaniasis: A scoping review protocol on pathogen diversity, geographic distribution and knowledge gaps. PLoS One. Sep 22;20(9):e0332874. doi: 10.1371/journal.pone.0332874. eCollection 2025.PMID: 40982530
    
    

42. Vinueza-Fernández I, Quintana TR, Masson I, Marroig A, Massa F, Grijalva, MJ, Muniz-Terrera G. 2025. Prospective ECUAging observational study: cohort design and preliminary results. BMC Geriatr. Nov 11;25(1):888. doi: 10.1186/s12877-025-06436-0.PMID: 41219712
    
    

43. Barnab C, Grijalva MJ, Santill n-Guayasam n S, Yumiseva CA, Waleckx E, Breni re SF, Villac s AG. 2020. Genetic data support speciation between Panstrongylus howardi and Panstrongylus chinai, vectors of Chagas disease in Ecuador. Infect Genet Evol. 2019 Nov 5;78:104103. doi: 10.1016/j.meegid.2019.104103. PMID: 31698115
     

44. Rivadeneira M.F., Moncayo A.L., Tello B., Torres A.L., Buitr n G.J., Astudillo F., Fredricks T.R., Grijalva M.J. 2020. A Multi-causal Model for Chronic Malnutrition and Anemia in a Population of Rural Coastal Children in Ecuador. Matern Child Health J. doi: 10.1007/s10995-019-02837-x. PMID: 31838668
     

45. Bates, B. R., Villacis, A. G., Mendez-Trivino, A., Mendoza, L. E., & Grijalva, M. J. 2020. Determinants of intentions to prevent triatomine infestation based on the Health Belief Model: An application in rural southern Ecuador. PLoS: Neglected Tropical Diseases. 14(1): e0007987. https://doi.org/10.1371/journal.pntd.0007987 PMID: 31999721.
     

46. Mu oz-Tobar, S. I., Abad-Franch, F. and Grijalva, M. J. 2020. Rhodnius pallescens microsatellite markers for population genetic analysis in Rhodnius ecuadoriensis: preliminary assessment. Revista Ecuatoriana de Medicina y Ciencias Biologicas Volumen 40 (2): 87-93.
     

47. Bates, B. R., Nieto-Sanchez, C., Marvel, D., Guerrero, D., Baus, E. G., & Grijalva, M. J. 2020. Broadening media for development communication: Alternative channels employed in Loja, Ecuador. Asia Pacific Media Educator. https://doi.org/10.1177/1326365X19870097
     

48. Bates, B. R., Sharma, D., Baus, E. G., & Grijalva, M. J. (2020). En nuestra casa no hay chinchorros: A youth-oriented, participatory approach to Chagas prevention in Loja province, Ecuador. Frontiers in Communication 5, Corregidum: Frontiers in Communication 5, 30
     

49. Villac s, A.G., Bustillos, J.J., Depick re, S., S nchez, D., Yumiseva, C.A., Troya-Zuleta, A., Barnab , C., Grijalva, M.J., Breni re, S.F. Would tropical climatic variations impact the genetic variability of triatomines: Rhodnius ecuadoriensis, principal vector of Chagas disease in Ecuador? Acta Tropica 19;209:105530. doi: 10.1016/j.actatropica.2020.105530. PMID: 32439318
     

50. Santill n-Guayasam n S., Barnab C., Magall n-Gastelum E., Waleckx E., Yumiseva C.A., Grijalva M.J., Villac s A.G., Breni re S.F. 2020. Molecular data supports monophyly of Triatoma dispar complex within genus Triatoma. Infect Genet Evol. 18:104429. doi:10.1016/j.meegid.2020.104429. PMID: 32565363
     

51. Maiguashca S nchez J., Sueto S.O.B., Schwabl P., Grijalva M.J., Llewellyn M.S., Costales J.A. 2020. Remarkable genetic diversity of Trypanosoma cruzi and Trypanosoma rangeli in two localities of southern Ecuador identified via deep sequencing of mini-exon gene amplicons. Parasit Vectors. 14;13(1):252. doi:10.1186/s13071-020-04079-1. PMID: 32410645
     

52. Villac s, A.G., Dujardin, J.P., Yumiseva, C.A., Santill n-Guayasam n, S., Orozco, M.I., Mosquera, K.D., Panzera, F., Pita, S. and Grijalva, M.J. 2020. Chagas vectors Panstrongylus chinai (Del Ponte, 1929) and P. howardi (Neiva, 1911): melanic forms or true species? Parasites & Vectors. 13(1):226. doi: 10.1186/s13071-020-04097-z. PMID: 32375868
     

53. Alonso-Padilla J., Abril M., Alarc n de Noya B., Almeida I.C., Angheben A., Araujo Jorge T., Chatelain E., Esteva M., Gasc n J., Grijalva M.J., Guhl F., Hasslocher-Moreno A.M., L pez M.C., Luquetti A., Noya O., Pinazo M.J., Ramsey J.M., Ribeiro I., Ruiz A.M., Schijman A.G., Sosa-Estani S., Thomas M.C., Torrico F., Zrein M., Picado A. 2020. Target product profile for a test for the early assessment of treatment efficacy in Chagas disease patients: An expert consensus. PLoS Negl Trop Dis. 14(4):e0008035. doi: 10.1371/journal.pntd.0008035. PMID: 32324735
     

54. Bates B.R., Grijalva D.A., Grijalva M.J. A Culture-Centered, Participatory Approach to Defining Development in Rural Ecuador. Qualitative Research Reports in Communication, 1-14
     

55. Reina Ortiz M., Grijalva M.J., Turell M.J., Waters W. F., Montalvo A.C., Mathias D., Sharma V., Renoy C.F., Suits P., Thomas S.J., Leon R. 2020. Biosafety at Home: How to Translate Biomedical Laboratory Safety Precautions for Everyday Use in the Context of COVID-19. Am J Trop Med Hyg. 2020. doi:10.4269/ajtmh.20-0677. PMID: 32597388
     

56. Bates BR, Moncayo AL, Costales JA, Herrera-Cespedes CA, Grijalva MJ. 2020. Knowledge, Attitudes, and Practices Towards COVID-19 Among Ecuadorians During the Outbreak: An Online Cross-Sectional Survey. J Community Health. doi: 10.1007/s10900-020-00916-7. PMID: 32915380
     

57. Bismark Oduro, Mario J. Grijalva, Winfried Just. 2019. A model of insect control with imperfect treatment. Journal of Biological Dynamics. 2019 Dec;13(1):518-537. doi: 10.1080/17513758.2019.1640293. PMID: 31290728
     

58. Nieto-Sanchez C, Bates BR, Guerrero D, Jimenez S, Baus EG, Peeters Grietens K, Grijalva MJ. 2019. Home improvement and system-based health promotion for sustainable prevention of Chagas disease: A qualitative study. PLoS Negl Trop Dis. 2019 Jun 13;13(6):e0007472. doi: 10.1371/journal.pntd.0007472. eCollection 2019 Jun. PMID: 31194754 http://dx.plos.org/10.1371/journal.pntd.0007472
     

59. Benjamin R Bates, Diana L Marvel, Claudia Nieto-Sanchez, Mario J Grijalva. 2019. Painting a community-based definition of health: A culture-centered approach to listening to rural voice in Chaquizhca, Ecuador. Frontiers in Communication. 4:37.
     

60. Jessica Arnold, Julia Flint, Sharon Casapulla, Claudia Nieto & Mario J. Grijalva (2019) Medical pluralism in maternal health-seeking behavior of rural women in Southern Ecuador, Health Care for Women International, DOI: 10.1080/07399332.2019.1642891
     

61. Schwabl P, Imamura H, Van den Broeck F, Costales JA, Maiguashca-S nchez J, Miles MA, Andersson B, Grijalva MJ, Llewellyn MS. 2019. Meiotic sex in Chagas disease parasite Trypanosoma cruzi. Nat Commun. 2019 Sep 3;10(1):3972. doi: 10.1038/s41467-019-11771-z. PMID: 31481692 https://www.nature.com/articles/s41467-019-11771-z
     

62. Moncayo AL, Granizo G, Grijalva MJ, Rasella D. 2019. Strong effect of Ecuador's conditional cash transfer program on childhood mortality from poverty-related diseases: a nationwide analysis. BMC Public Health. 2019 Aug 17;19(1):1132. doi: 10.1186/s12889-019-7457-y. PMID: 31420035. https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-019-7457-y
     

63. Maria E Grillet, Juan V Hernandez, Martin S. Llewellyn; Alberto Paniz-Mondolfi, Adriana Tami, Maria F Vincenti-Gonz lez, Marilianna Marquez, Adriana Mogollon-Mendoza, Carlos E Hernandez-Pereira, Juan Plaza-Morr, Gabriela Blohm, Mario J Grijalva, Jaime A Costales, Heather Ferguson, Philipp Schwabl, Luis E Hernandez-Castro, Poppy Lamberton, Daniel Streiker, Daniel Haydon, Michael A Miles, Maikell Segovia, Alvaro Acosta-Serrano, Harry Acquatella, Maria G Basa ez, Gustavo Benaim, Luis A Colmenares, Jan E Conn, Raul Espinoza, Hector Freilij, Mary C Graterol-Gil, Peter Hotez, Hirotomo Kato, John A Lednicky, Edgar Marchan, Clara E Martinez, Santiago Mas-Coma, Antonio Morocoima, Glenn Morris Jr, Juan C Carlos, Jos L Ram rez, Marlenes Rodr guez, Julio A Urbina, Leopoldo Villegas, Hern n J Carrasco, James L Crainey, Sergio Luz, Jorge Moreno, Oscar Noya, Juan D Ram rez, Belkisyol Alarc n-de Noya. Venezuela's humanitarian crisis, resurgence of vector-borne diseases and implications for spillover in the region: a call for action. Lancet. February 21, 2019. http://dx.doi.org/10.1016/S1473-3099(18)30757-6
     

64. Soledad Santill n-Guayasam n, Anita G. Villac s, Mario J. Grijalva and Jean-Pierre Dujardin. 2018. Triatominae: does the shape change of non-viable eggs compromise species recognition? Parasites and Vectors 2018 Oct 10;11(1):543. doi: 10.1186/s13071-018-3104-1
     

65. Benjamin R. Bates, Diana L. Marvel, Claudia Nieto-Sanchez & Mario J. Grijalva (2019) Community cartography in health communication: An asset-based mapping approach in four communities in rural Ecuador, Journal of International and Intercultural Communication, 12:3, 228-247, DOI: 10.1080/17513057.2018.1524506
     

66. Anabel Padilla N., Ana L. Moncayo, Clifford B. Keil, Mario J. Grijalva, Anita G. Villac s. 2019. Life cycle, feeding and defecation patterns of Triatoma carrioni 1 (Larrousse, 1926), under laboratory conditions. Journal of Medical Entomology. Feb 15. pii: tjz004. doi: 10.1093/jme/tjz004.
     

67. Sof a Oca a-Mayorga, Sim n E. Lobos, Ver nica Crespo-P rez, Anita G. Villac s, C. Miguel Pinto and Mario J. Grijalva. Influence of ecological factors on the presence of a triatomine species associated with the arboreal habitat of a host of Trypanosoma cruzi. Parasites and Vectors 2018 Oct 29;11(1):567. doi: 10.1186/s13071-018-3138-4.
     

68. Soledad Santill n-Guayasam n, Anita G. Villac s, Mario J. Grijalva and Jean-Pierre Dujardin. 2018. Triatominae: does the shape change of non-viable eggs compromise species recognition? Parasites and Vectors 2018 Oct 10;11(1):543. doi: 10.1186/s13071-018-3104-1
     

69. Patterson NM, Bates BR, Chadwick AE, Nieto-Sanchez C, Grijalva MJ. 2018. Using the health belief model to identify communication opportunities to prevent Chagas disease in Southern Ecuador. PLoS Negl Trop Dis. 2018 Sep 27;12(9):e0006841. doi: 10.1371/journal.pntd.0006841. PMID: 30260961
     

70. Lydy SL, Lascano MS, Garcia-Perez JE, Williams-Newkirk AJ, Grijalva MJ. 2018. Seroprevalence and risk factors for infection with Bartonella bacilliformis in Loja province, Ecuador. Emerg Microbes Infect. 25;7(1):115. doi: 10.1038/s41426-018-0110-5.
     

71. Marco-Crespo B, Casapulla S, Nieto-Sanchez C, Urrego JGG, Grijalva MJ. 2018. Youth participatory research and evaluation to inform a Chagas disease prevention program in Ecuador. Eval Program Plann. 2018 Apr 30;69:99-108. doi: 10.1016/j.evalprogplan.2018.04.009. PMID: 29753193. [Abstract]
     

72. Hernandez-Castro LE, Paterno M, Villac s AG, Andersson B, Costales JA, De Noia M, Oca a-Mayorga S, Yumiseva CA, Grijalva MJ, Llewellyn MS. 2017. 2b-RAD genotyping for population genomic studies of Chagas disease vectors: Rhodnius ecuadoriensis in Ecuador. PLoS Negl Trop Dis. 2017 Jul 19;11(7):e0005710. doi: 10.1371/journal.pntd.0005710. eCollection 2017 Jul. PMID: 28723901. [Abstract]
     

73. Grijalva MJ, Villac s AG, Moncayo AL, Oca a-Mayorga S, Yumiseva CA, Baus EG. 2017. Distribution of triatomine species in domestic and peridomestic environments in central coastal Ecuador. PLoS Negl Trop Dis. 2017 Oct 2;11(10):e0005970. doi: 10.1371/journal.pntd.0005970. eCollection 2017 Oct. PMID: 28968383. [Abstract]
     

74. Oduro B, Grijalva MJ, Just W. 2018. Models of Disease Vector Control: When Can Aggressive Initial Intervention Lower Long-Term Cost? Bull Math Biol. 2018 Apr;80(4):788-824. doi: 10.1007/s11538-018-0401-y. Epub 2018 Feb 5. PMID: 29404878.
     

75. Sharon L. Casapulla, Gloria Aidoo-Frimpong, Tania B. Basta, Mario J. Grijalva. 2018. Zika virus knowledge and attitudes in Ecuador AIMS Public Health, 5(1): 49-63. doi: 10.3934/publichealth.2018.1.49
     

76. Villac s AG, Marcet PL, Yumiseva CA, Dotson EM, Tibayrenc M, Breni re SF, Grijalva MJ. 2017. Pioneer study of population genetics of Rhodnius ecuadoriensis (Hemiptera: Reduviidae) from the central coastand southern Andean regions of Ecuador. Infect Genet Evol. 2017 May 22;53:116-127. doi: 10.1016/j.meegid.2017.05.019. [Abstract]
     

77. Casapulla SL, Howe CA, Mora GR, Berryman D, Grijalva MJ, Rojas EW, Nakazawa M, Shubrook JH. 2017. Cardiometabolic risk factors, metabolic syndrome and pre-diabetes in adolescents in the Sierra region of Ecuador.Diabetol Metab Syndr. 2017 Apr 19;9:24. doi: 10.1186/s13098-017-0224-2. eCollection 2017. [Abstract][Full text][PDF]
     

78. Santill n-Guayasam n S, Villac s AG, Grijalva MJ, Dujardin JP. 2017. The modern morphometric approach to identify eggs of Triatominae. Parasit Vectors. 2017 Jan 31;10(1):55. doi: 10.1186/s13071-017-1982-2. [Abstract][Full text][PDF]
     

79. Mario J. Grijalva, Anita G. Villacis, Sofia Oca a-Mayorga, Cesar A. Yumiseva, Ana L. Moncayo, Esteban G. Baus. 2015. Comprehensive Survey of Domiciliary Triatomine Species Capable of Transmitting Chagas Disease in Southern Ecuador. PLoS Negl Trop Dis. Oct 6;9(10):e0004142. doi: 10.1371/journal.pntd.0004142. [Full text][PDF]
     

80. Pinto CM, Oca a-Mayorga S, Tapia EE, Lobos SE, Zurita AP, Aguirre-Villac s F, MacDonald A, Villac s AG, Lima L, Teixeira MMG, Grijalva MJ, Perkins SL. Bats, trypanosomes, and triatomines in Ecuador: new insights into the diversity, transmission, and origins of Trypanosoma cruzi and Chagas disease. PLoS One. 2015 Oct 14;10(10):e0139999. doi: 10.1371/journal.pone.0139999. eCollection 2015. PMID:26465748 [Full text][PDF]
     

81. Sofia Oca a-Mayorga, Fernanda Aguirre-Villacis, C. Miguel Pinto, Gustavo A. Vallejo, Mario J. Grijalva. 2015 Prevalence, Genetic Characterization, and 18S Small Subunit Ribosomal RNA Diversity of Trypanosoma rangeli in Triatomine and Mammal Hosts in Endemic Areas for Chagas Disease in Ecuador.. Journal of Vector Borne and Zoonotic Diseases. Dec;15(12):732-42. doi: 10.1089/vbz.2015.1794. Epub 2015 Dec 8. PMID:26645579 [Full text][PDF]
     

82. Costales, Jaime A., Miguel A Jara-Palacios, Martin S. Llewellyn, Louisa A. Messenger, Sof a Oca a-Mayorga, Anita G. Villac s, Michel Tibayrenc, and Mario J. Grijalva. 2015. Trypanosoma cruzi population dynamics in the Central Ecuadorian Coast. Acta TropicaScienceDirect, EBSCOhost (accessed September 3, 2015). [Full Text]
     

83. Nieto-Sanchez, C., Baus, E.G., Guerrero, D, & Grijalva, M.J. 2015. Positive deviance study to inform a Chagas disease control program in southern Ecuador. Mem rias Do Instituto Oswaldo Cruz, (3), 299. doi:10.1590/0074-02760140472 [Full Text]
     

84. Costales JA, S nchez-G mez A, Silva-Aycaguer LC, Cevallos W, Tamayo S, Yumiseva CA, Jacobson JO, Martini L, Carrera CA, Grijalva MJ. 2015. A National Survey to Determine Prevalence of Trypanosoma cruzi Infection Among Pregnant Women in Ecuador. Am J Trop Med Hyg. 2015 Feb 9. pii: 14-0562. [Abstract]
     

85. Villac s AG, Oca a-Mayorga S, Lascano MS, Yumiseva CA, Baus EG, Grijalva MJ. 2015. Abundance, Natural Infection with Trypanosomes, and Food Source of an Endemic Species of Triatomine, Panstrongylus howardi (Neiva 1911), on the Ecuadorian Central Coast. Am J Trop Med Hyg. 92(1), 187 192. doi:10.4269/ajtmh.14-0250 [Abstract]
     

86. Mario J. Grijalva, David Ter n, Olivier Dangles. 2014. Dynamics of Sylvatic Chagas Disease Vectors in Coastal Ecuador is Driven by Changes in Land Cover. PLoS Negl Trop Dis. 2014 Jun 26;8(6):e2960. doi: 10.1371/journal.pntd.0002960 [Full text]
     

87. Bhattacharyya T, Falconar AK, Luquetti AO, Costales JA, Grijalva MJ, Lewis MD, Messenger LA, Tran TT, Ramirez JD, Guhl F, Carrasco HJ, Diosque P, Garcia L, Litvinov SV, Miles MA. 2014. Development of Peptide-based lineage-specific serology for chronic chagas disease: geographical and clinical distribution of epitope recognition. PLoS Negl Trop Dis. 2014 May 22;8(5):e2892. doi: 10.1371/journal.pntd.0002892. eCollection 2014 May.[Full text]
     

88.  Rodolfo Viotti, Belkisyol Alarc n de Noya, Tania Araujo-Jorge, Mario J. Grijalva, Felipe Guhl, Manuel Carlos L pez, Janine Ramsey, Isabela Ribeiro, Alejandro Schijman, Sergio Sosa-Estani, Faustino Torrico, and Joaquin Gascon. Towards a paradigm shift in the treatment of chronic Chagas disease. 2014. Antimicrobial Agents and Chemotherapy. Antimicrob Agents Chemother. 58(2):635-9. doi: 10.1128/AAC.01662-13. Epub 2013 Nov 18. [Full text]
     

89. Amaya S nchez-G mez, Mario J Grijalva, Luis C Silva-Aycaguer, Susana Tamayo, Cesar A Yumiseva, Jaime A Costales, Jerry O Jacobson, Marcelo Chiriboga, Eliana Champutiz, Carlos Mosquera, Mercedes Larrea, William Cevallos. 2014. HIV and syphilis infection in pregnant women in Ecuador: prevalence and characteristics of antenatal care. Sexually Transmitted Infections. 90(1):70-5. doi: 10.1136/sextrans-2013-051191. Epub 2013 Nov 26.
     

90. Monteiro FA, Peretolchina T, Lazoski C, Harris K, Dotson EM, Abad-Franch F, Tamayo E, Pennington PM, Monroy C, Cordon-Rosales C, Salazar-Schettino PM, G mez-Palacio A, Grijalva MJ, Beard CB, Marcet PL. 2013. Phylogeographic Pattern and Extensive Mitochondrial DNA Divergence Disclose a Species Complex within the Chagas Disease Vector Triatoma dimidiata. PLoS One. Aug 5;8(8):e70974. doi: 10.1371/journal.pone.0070974 [Full text]

91. Grijalva MJ, Suarez-Davalos V, Villacis AG, Ocana-Mayorga S, Dangles O. 2012. Ecological factors related to the widespread distribution of sylvatic Rhodnius ecuadoriensis populations in southern Ecuador.  Parasites and Vectors. 13;5(1):17. [Full text]

92. Teodoro TM, Jannotti-Passos LK, Carvalho Odos S, Grijalva MJ, Ba s EG, Caldeira RL. 2011. Hybridism between Biomphalaria cousini and Biomphalaria amazonica and its susceptibility to Schistosoma mansoni.
    Mem Inst Oswaldo Cruz. 2011 Nov;106(7):851-5. [Full text]

93. Mario J. Grijalva, Anita G. Villac s, Sof a Oca a-Mayorga, C sar A. Yumiseva, Esteban G. Baus. 2011. Limitations of selective deltamethrin application for triatomine control in central coastal Ecuador. Parasites and Vectors. 4:20 (18 February 2011) [Full text]
     

94. Oca a-Mayorga S, Llewellyn MS, Costales JA, Miles MA, Grijalva MJ. 2010. Sex, Subdivision, and Domestic Dispersal of Trypanosoma cruzi Lineage I in Southern Ecuador. PLoS Negl Trop Dis 4(12): e915. doi:10.1371/journal.pntd.0000915 [Full text]
     

95. Anita G. Villacis, Mario J. Grijalva, Silvia S. Catala. 2010. Phenotypic variability of Rhodnius ecuadoriensis populations at the Ecuadorian central and southern Andean region.  Journal of Medical Entomology. 47(6):1034-1043
     

96. Jose R. Loaiza, Marilyn E. Scott, Eldredge Bermingham, Oris I. Sanjur, Richard Wilkerson,
    Jose Rovira, Lina A. Guti rrez, Margarita M. Correa, Mario J. Grijalva, Lotty Birnberg,
    Sara Bickersmith, Jan E. Conn. 2010. Late Pleistocene environmental changes lead to unstable demography
    and population divergence of Anopheles albimanus in the northern Neotropics. Molecular Phylogenetics and Evolution 57:1341 1346
     

97. Mario J. Grijalva, Francisco S. Palomeque, Anita G. Villac s, Carla L. Black, Laura Arcos-Ter n. 2010. Absence of domestic triatomine colonies in an area where Chagas Disease is considered endemic in the coastal region of Ecuador. Memorias do Instituto Oswaldo Cruz. 105(5): 667-681.

     

98. Richard Reithinger, Mario J. Grijalva, Rosa F. Chiriboga, Belkisyol Alarc n de Noya, Jaime R. Torres, Norma Pavia, Pablo Manrique-Saide, and Ricardo E. G rtler. 2010. Rapid detection of Trypanosoma cruzi in human serum using an immunochromatographic dipstick test. Journal of Clinical Microbiology. 2010 Aug;48(8):3003-7.
     

99. Abad-Franch F, Ferraz G, Campos C, Palomeque FS, Grijalva MJ, Aguilar HM, Miles MA.
    2010. Modeling disease vector occurrence when detection is imperfect: infestation of Amazonian palm trees by triatomine bugs at three spatial scales. PLoS Negl Trop Dis. 2010 Mar 2;4(3):e620 [Full text]
     

100. C. Miguel Pinto, B. Dnate Baxter, J. Delton Hanson, Francisca M. M ndez-Harclerode, John R. Suchecki, Mario J. Grijalva, Charles F. Fulhorst, and Robert D. Bradley. 2010. Using Museum Collections to Detect Pathogens.  Journal of  Infectious Diseases. 16(2):356-357
      

101. Carla L. Black, Sof a Oca a-Mayorga, Diana K. Riner, Jaime A. Costales, Mauricio S. Lascano, Laura Arcos-Ter n, John S. Preisser, J. Richard Seed, and Mario J. Grijalva. 2010. Seroprevalence of Trypanosoma cruzi in rural ecuador and clustering of seropositivity within households.  American Journal of Tropical Medicine and Hygiene. 81(6): 1035-1040.
      

102. Victoria Suarez-Davalos, Olivier Dangles, Anita G. Villacis, Mario J. Grijalva. 2010 .  Microdistribution of sylvatic triatomine populations in Central-coastal Ecuador. Journal of Medical Entomology. 47(1): 80-88
      

103. Grijalva MJ, Chiriboga RF, Cueva GF, Arcos-Teran L. 2009. Evaluaci n externa del desempe o en serolog a para el marcador VIH en los bancos de sangre del Ecuador (2003 a 2008). [External performance evaluation in HIV serology in the blood banks of Ecuador (2003 to 2008). Bolet n Epidemiol gico (Ecuador) 52(6): 7 - 17
      

104. Grijalva M.J., Villacis, A. G. 2009. Presence of Rhodnius ecuadoriensis in Sylvatic Habitats in the
     Southern Highlands (Loja Province) of Ecuador. Journal of Medical Entomology 46(3): 708 -711
      

105. Schofield C.J.,  Grijalva M.J., Diotaiuti L. (2009) Distribuci n de los vectores de la Enfermedad de Chagas en pa ses no end micos : la posibilidad de transmisi n vectorial fuera de Am rica Latina. [Distribution of Chagas disease vectors in "non endemic" countries: Potential for vectorial transmission outside of Latin America]. Enfermedades Emergentes 11 (supl..1) 20-27.
      

106. Anita G Villac s, Laura Arcos-Ter n, Mario J Grijalva. 2008. Life cycle, feeding and defecation patterns of Rhodnius ecuadoriensis (Lent & Le n 1958) (Hemiptera: Reduviidae: Triatominae) under laboratory conditions. Mem Inst Oswaldo Cruz, Rio de Janeiro, Vol. 103(7): 690-695 [See PDF]
      

107. Carla L. Black, Sofia Oca a, Diana Riner, Jaime A. Costales, Mauricio S. Lascano, Santiago Davila, Laura Arcos-Teran, J. Richard Seed, and Mario J. Grijalva. 2007. Household Risk Factors For Trypanosoma cruzi Seropositivity In Two Geographic Regions Of Ecuador. Journal of Parasitology. 93 (1): 12-16.
      

108. C. Miguel Pinto, Sof a Oca a-Mayorga, Mauricio S. Lascano, and Mario J. Grijalva. 2006. Infection By Trypanosomes In Marsupials And Rodents Associated With Human Dwellings In Ecuador. Journal of Parasitology. 92: 1251-1255.
      

109. Mario J. Grijalva, Rosa F. Chiriboga, Hans Vanhassel, Laura Arcos-Teran.  2005. Improving the safety of the blood supply in Ecuador through external performance evaluation of serological screening of blood donors. Journal of Clinical Virology 34 Suppl. 2. S47 S52
      

110. M. J. Grijalva ; F. S. Palomeque-Rodr guez ; J. A. Costales ; S. Davila ; L. Arcos-Teran. 2005. High Household Infestation Rates by Synanthropic Vectors of Chagas Disease in Southern Ecuador. Journal of Medical Entomology. 42(1): 68 - 74
      

111. Mario J. Grijalva, Luis Escalante, Rodrigo A. Paredes, Jaime A. Costales, Alberto Padilla, Edwin C. Rowland, H. Marcelo Aguilar and Jose Racines. 2003 . Seroprevalence and Risk Factors for Trypanosoma cruzi Infection in the Amazon Region of Ecuador. American Journal of Tropical Medicine and Hygiene. 69: 380-385. [See Medline record] [See article at AJTMH ]
      

112. Palomeque FS, Abad-Franch F, Grijalva, M.J. 2003. Notas sobre la biolog a y bionom a de Rhodnius robustus Larrouse, 1927 (Hemiptera: Reduviidae: Triatominae). Revista de la Pontificia Universidad Cat lica del Ecuador 71: 49-60
      

113. Pinto, C.M., Grijalva, M.J., Costales, J.A. 2003. Prevalencia de Trypanosoma cruzi en roedores y marsupiales en dos localidades de Manab , Ecuador. Revista de la Pontificia Universidad Cat lica del Ecuador 71: 225-233
      

114. Michael J. James, Michael J. Yabsley, Oscar J. Pung, and Mario J. Grijalva. 2002. Amplification of Trypanosoma cruzi Specific Sequences in Formalin fixed Raccoon Tissues Using Polymerase Chain Reaction. Journal of Parasitology. 85(5):989-993. [See Medline record]
      

115. Jeannette Guarner, Jeanine Bartlett, Sherif R. Zaki, Daniel G. Colley, Mario J. Grijalva, and Malcolm R. Powell. 2001. Mouse model for Chagas' disease: Immunohistochemical distribution of different stages of Trypanosoma cruzi in tissues throughout infection. American Journal of Tropical Medicine and Hygiene. 65(2):152-158. [See Medline record]
      

116. Herwaldt B.L., Grijalva M.J., Newsome A.L., McGhee C.R., Powell M.R., Nemec D.G., Steurer F.J., and Eberhard M.L. 2000. Use of polymerase chain reaction to diagnose the fifth reported U.S. case of autochthonous transmission of Trypanosoma cruzi Tennessee 1998. Journal of  Infectious Diseases. Jan;181(1):395-399. [See Medline record] [See full text article]
      

117. Grijalva, M. J., Goodrum K., Rowland E. C. 1999. Characterization of Antigens released by Trypanosoma cruzi infected cells. Journal of Parasitology. 85(4):663-671. [See Medline record]
      

118. Grijalva, M. J., Chiriboga, R., Racines, J, Escalante, L. and Rowland, E. C. 1997. Screening for Trypanosoma cruzi in the blood supply by the Red Cross blood bank in Quito, Ecuador. American Journal of Tropical Medicine and Hygiene. 57(6 ):740-741. [See Medline record]
      

119. Grijalva, M. J., Rowland, E. C., Powell, M. R., McCormick, T. S., Escalante, L. 1995. Blood donors in a vector free zone of Ecuador are potentially infected with Trypanosoma cruzi. American Journal of Tropical Medicine and Hygiene 52(4):360-363. [See Medline record]