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Fatal acute Chagas disease by Trypanosoma cruzi DTU TcI, Ecuador.

Calvopina M, Segovia G, Cevallos W, Vicuña Y, Costales JA, Guevara A.

BMC Infect Dis. 2020 Feb 14;20(1):143. doi: 10.1186/s12879-020-4851-0.


Mapping the Prevalence of Strongyloides stercoralis Infection in Ecuador: A Serosurvey.

Guevara AG, Anselmi M, Bisoffi Z, Prandi R, Márquez M, Silva R, Vicuña Y, Calvopiña M, Cevallos W, Pérez J, Baldeón L, Buonfrate D.

Am J Trop Med Hyg. 2020 Feb;102(2):346-349. doi: 10.4269/ajtmh.19-0565.


Household coping strategies associated with unreliable water supplies and diarrhea in Ecuador, an upper-middle-income country.

Lee GO, Whitney HJ, Blum AG, Lybik N, Cevallos W, Trueba G, Levy K, Eisenberg JNS.

Water Res. 2020 Mar 1;170:115269. doi: 10.1016/j.watres.2019.115269. Epub 2019 Nov 7.


Metagenomic Signatures of Gut Infections Caused by Different Escherichia coli Pathotypes.

Peña-Gonzalez A, Soto-Girón MJ, Smith S, Sistrunk J, Montero L, Páez M, Ortega E, Hatt JK, Cevallos W, Trueba G, Levy K, Konstantinidis KT.

Appl Environ Microbiol. 2019 Nov 27;85(24). pii: e01820-19. doi: 10.1128/AEM.01820-19. Print 2019 Dec 15.


Characterization of the mitochondrial genome sequences of the liver fluke Amphimerus sp. (Trematoda: Opisthorchiidae) from Ecuador and phylogenetic implications.

Ma J, He JJ, Zhou CY, Sun MM, Cevallos W, Sugiyama H, Zhu XQ, Calvopiña M.

Acta Trop. 2019 Jul;195:90-96. doi: 10.1016/j.actatropica.2019.04.025. Epub 2019 Apr 22.


Locals get travellers' diarrhoea too: risk factors for diarrhoeal illness and pathogenic Escherichia coli infection across an urban-rural gradient in Ecuador.

Smith SM, Montero L, Paez M, Ortega E, Hall E, Bohnert K, Sanchez X, Puebla E, Endara P, Cevallos W, Trueba G, Levy K.

Trop Med Int Health. 2019 Feb;24(2):205-219. doi: 10.1111/tmi.13183. Epub 2018 Dec 6.


A comparison of Kato-Katz technique to three other methods for diagnosis of Amphimerus spp. liver fluke infection and the prevalence of infection in Chachi Amerindians of Ecuador.

Calvopina M, Romero-Alvarez D, Diaz F, Cevallos W, Sugiyama H.

PLoS One. 2018 Oct 4;13(10):e0203811. doi: 10.1371/journal.pone.0203811. eCollection 2018.


The Role of Mobile Genetic Elements in the Spread of Antimicrobial-Resistant Escherichia coli From Chickens to Humans in Small-Scale Production Poultry Operations in Rural Ecuador.

Moser KA, Zhang L, Spicknall I, Braykov NP, Levy K, Marrs CF, Foxman B, Trueba G, Cevallos W, Goldstick J, Trostle J, Eisenberg JNS.

Am J Epidemiol. 2018 Mar 1;187(3):558-567. doi: 10.1093/aje/kwx286.


Diagnosis of amphimeriasis by LAMPhimerus assay in human stool samples long-term storage onto filter paper.

Cevallos W, Fernández-Soto P, Calvopiña M, Buendía-Sánchez M, López-Abán J, Vicente B, Muro A.

PLoS One. 2018 Feb 14;13(2):e0192637. doi: 10.1371/journal.pone.0192637. eCollection 2018.


Trends of child undernutrition in rural Ecuadorian communities with differential access to roads, 2004-2013.

Lopez VK, Dombecki C, Trostle J, Mogrovejo P, Castro Morillo N, Cevallos W, Goldstick J, Jones AD, Eisenberg JNS.

Matern Child Nutr. 2018 Jul;14(3):e12588. doi: 10.1111/mcn.12588. Epub 2018 Feb 7.


Intralesional Infiltration with Meglumine Antimoniate for the Treatment of Leishmaniasis Recidiva Cutis in Ecuador.

Calvopiña M, Cevallos W, Paredes Y, Puebla E, Flores J, Loor R, Padilla J.

Am J Trop Med Hyg. 2017 Nov;97(5):1508-1512. doi: 10.4269/ajtmh.17-0340. Epub 2017 Oct 10.


Determinants of Short-term Movement in a Developing Region and Implications for Disease Transmission.

Kraay ANM, Trostle J, Brouwer AF, Cevallos W, Eisenberg JNS.

Epidemiology. 2018 Jan;29(1):117-125. doi: 10.1097/EDE.0000000000000751.


LAMPhimerus: A novel LAMP assay for detecting Amphimerus sp. DNA in human stool samples.

Cevallos W, Fernández-Soto P, Calvopiña M, Fontecha-Cuenca C, Sugiyama H, Sato M, López Abán J, Vicente B, Muro A.

PLoS Negl Trop Dis. 2017 Jun 19;11(6):e0005672. doi: 10.1371/journal.pntd.0005672. eCollection 2017 Jun.


Enzyme-linked immunosorbent assay for diagnosis of Amphimerus spp. liver fluke infection in Humans.

Cevallos W, Calvopiña M, Nipáz V, Vicente-Santiago B, López-Albán J, Fernández-Soto P, Guevara Á, Muro A.

Mem Inst Oswaldo Cruz. 2017 May;112(5):364-369. doi: 10.1590/0074-02760160426. Epub 2017 Mar 27.


Coinfection of Leishmania guyanensis and Human Immunodeficiency Virus-Acquired Immune Deficiency Syndrome: Report of a Case of Disseminated Cutaneous Leishmaniasis in Ecuador.

Calvopina M, Aguirre C, Cevallos W, Castillo A, Abbasi I, Warburg A.

Am J Trop Med Hyg. 2017 May;96(5):1151-1154. doi: 10.4269/ajtmh.16-0431. Epub 2017 Feb 13.


[Social factors associated with use of prenatal care in Ecuador].

Sánchez-Gómez A, Cevallos W, Grijalva MJ, Silva-Ayçaguer LC, Tamayo S, Jacobson JO, Costales JA, Jiménez-Garcia R, Hernández-Barrera V, Serruya S, Riera C.

Rev Panam Salud Publica. 2016 Nov;40(5):341-346. Spanish.


Association of Household Food Insecurity with the Mental and Physical Health of Low-Income Urban Ecuadorian Women with Children.

Weigel MM, Armijos RX, Racines M, Cevallos W, Castro NP.

J Environ Public Health. 2016;2016:5256084. Epub 2016 Sep 26.


Antibiotic Resistance in Animal and Environmental Samples Associated with Small-Scale Poultry Farming in Northwestern Ecuador.

Braykov NP, Eisenberg JN, Grossman M, Zhang L, Vasco K, Cevallos W, Muñoz D, Acevedo A, Moser KA, Marrs CF, Foxman B, Trostle J, Trueba G, Levy K.

mSphere. 2016 Feb 10;1(1). pii: e00021-15. doi: 10.1128/mSphere.00021-15. eCollection 2016 Jan-Feb.


Food Insecurity Is Associated with Undernutrition but Not Overnutrition in Ecuadorian Women from Low-Income Urban Neighborhoods.

Weigel MM, Armijos RX, Racines M, Cevallos W.

J Environ Public Health. 2016;2016:8149459. doi: 10.1155/2016/8149459. Epub 2016 Mar 23.


I get height with a little help from my friends: herd protection from sanitation on child growth in rural Ecuador.

Fuller JA, Villamor E, Cevallos W, Trostle J, Eisenberg JN.

Int J Epidemiol. 2016 Apr;45(2):460-9. doi: 10.1093/ije/dyv368. Epub 2016 Mar 2.


Distribution of Enteroinvasive and Enterotoxigenic Escherichia coli Across Space and Time in Northwestern Ecuador.

Bhavnani D, Bayas Rde L, Lopez VK, Zhang L, Trueba G, Foxman B, Marrs C, Cevallos W, Eisenberg JN.

Am J Trop Med Hyg. 2016 Feb;94(2):276-84. doi: 10.4269/ajtmh.14-0337. Epub 2015 Dec 7.


Unexpected distribution of the fluoroquinolone-resistance gene qnrB in Escherichia coli isolates from different human and poultry origins in Ecuador.

Armas-Freire PI, Trueba G, Proaño-Bolaños C, Levy K, Zhang L, Marrs CF, Cevallos W, Eisenberg JN.

Int Microbiol. 2015 Jun;18(2):85-90. doi: 10.2436/20.1501.01.237.


Effects of selection pressure and genetic association on the relationship between antibiotic resistance and virulence in Escherichia coli.

Zhang L, Levy K, Trueba G, Cevallos W, Trostle J, Foxman B, Marrs CF, Eisenberg JN.

Antimicrob Agents Chemother. 2015 Nov;59(11):6733-40. doi: 10.1128/AAC.01094-15. Epub 2015 Aug 17.


Spatial Variability of Escherichia coli in Rivers of Northern Coastal Ecuador.

Rao G, Eisenberg JN, Kleinbaum DG, Cevallos W, Trueba G, Levy K.

Water (Basel). 2015 Feb 13;7(2):818-832.


A national survey to determine prevalence of Trypanosoma cruzi infection among pregnant women in Ecuador.

Costales JA, Sánchez-Gómez A, Silva-Aycaguer LC, Cevallos W, Tamayo S, Yumiseva CA, Jacobson JO, Martini L, Carrera CA, Grijalva MJ.

Am J Trop Med Hyg. 2015 Apr;92(4):807-10. doi: 10.4269/ajtmh.14-0562. Epub 2015 Feb 9.


High prevalence of the liver fluke Amphimerus sp. in domestic cats and dogs in an area for human amphimeriasis in Ecuador.

Calvopiña M, Cevallos W, Atherton R, Saunders M, Small A, Kumazawa H, Sugiyama H.

PLoS Negl Trop Dis. 2015 Feb 3;9(2):e0003526. doi: 10.1371/journal.pntd.0003526. eCollection 2015 Feb.


Author's responses to the comment by Daniele Lantagne on "Household effectiveness vs. laboratory efficacy of point-of-use chlorination".

Levy K, Anderson L, Robb KA, Cevallos W, Trueba G, Eisenberg JNS.

Water Res. 2015 Feb 1;69:331-333. doi: 10.1016/j.watres.2014.11.033. Epub 2014 Dec 5. No abstract available.


Identifying etiological agents causing diarrhea in low income Ecuadorian communities.

Vasco G, Trueba G, Atherton R, Calvopiña M, Cevallos W, Andrade T, Eguiguren M, Eisenberg JN.

Am J Trop Med Hyg. 2014 Sep;91(3):563-9. doi: 10.4269/ajtmh.13-0744. Epub 2014 Jul 21.


Impact of rainfall on diarrheal disease risk associated with unimproved water and sanitation.

Bhavnani D, Goldstick JE, Cevallos W, Trueba G, Eisenberg JN.

Am J Trop Med Hyg. 2014 Apr;90(4):705-11. doi: 10.4269/ajtmh.13-0371. Epub 2014 Feb 24.


Household effectiveness vs. laboratory efficacy of point-of-use chlorination.

Levy K, Anderson L, Robb KA, Cevallos W, Trueba G, Eisenberg JN.

Water Res. 2014 May 1;54:69-77. doi: 10.1016/j.watres.2014.01.037. Epub 2014 Jan 31.


HIV and syphilis infection in pregnant women in Ecuador: prevalence and characteristics of antenatal care.

Sánchez-Gómez A, Grijalva MJ, Silva-Aycaguer LC, Tamayo S, Yumiseva CA, Costales JA, Jacobson JO, Chiriboga M, Champutiz E, Mosquera C, Larrea M, Cevallos W.

Sex Transm Infect. 2014 Feb;90(1):70-5. doi: 10.1136/sextrans-2013-051191. Epub 2013 Nov 26.


Heavy rainfall events and diarrhea incidence: the role of social and environmental factors.

Carlton EJ, Eisenberg JN, Goldstick J, Cevallos W, Trostle J, Levy K.

Am J Epidemiol. 2014 Feb 1;179(3):344-52. doi: 10.1093/aje/kwt279. Epub 2013 Nov 19.


Molecular identification of Giardia duodenalis in Ecuador by polymerase chain reaction-restriction fragment length polymorphism.

Atherton R, Bhavnani D, Calvopiña M, Vicuña Y, Cevallos W, Eisenberg J.

Mem Inst Oswaldo Cruz. 2013 Jun;108(4):512-5. doi: 10.1590/S0074-02762013000400019.


Social connectedness and disease transmission: social organization, cohesion, village context, and infection risk in rural Ecuador.

Zelner JL, Trostle J, Goldstick JE, Cevallos W, House JS, Eisenberg JN.

Am J Public Health. 2012 Dec;102(12):2233-9. doi: 10.2105/AJPH.2012.300795. Epub 2012 Oct 18.


Synergistic effects between rotavirus and coinfecting pathogens on diarrheal disease: evidence from a community-based study in northwestern Ecuador.

Bhavnani D, Goldstick JE, Cevallos W, Trueba G, Eisenberg JN.

Am J Epidemiol. 2012 Sep 1;176(5):387-95. doi: 10.1093/aje/kws220. Epub 2012 Jul 25.


Bhavnani et Al. respond to "assessing mechanistic interaction".

Bhavnani D, Hoggatt KJ, Goldstick JE, Cevallos W, Trueba G, Eisenberg JN.

Am J Epidemiol. 2012 Sep 1;176(5):400-1. doi: 10.1093/aje/kws217. Epub 2012 Jul 25. No abstract available.


Plesiomonas shigelloides infection, Ecuador, 2004-2008.

Escobar JC, Bhavnani D, Trueba G, Ponce K, Cevallos W, Eisenberg J.

Emerg Infect Dis. 2012 Feb;18(2):322-4. doi: 10.3201/eid1802.110562.


Where science meets policy: comparing longitudinal and cross-sectional designs to address diarrhoeal disease burden in the developing world.

Markovitz AR, Goldstick JE, Levy K, Cevallos W, Mukherjee B, Trostle JA, Eisenberg JN.

Int J Epidemiol. 2012 Apr;41(2):504-13. doi: 10.1093/ije/dyr194. Epub 2012 Jan 9.


High prevalence of human liver infection by Amphimerus spp. flukes, Ecuador.

Calvopiña M, Cevallos W, Kumazawa H, Eisenberg J.

Emerg Infect Dis. 2011 Dec;17(12):2331-4. doi: 10.3201/eid1712.110373.


In-roads to the spread of antibiotic resistance: regional patterns of microbial transmission in northern coastal Ecuador.

Eisenberg JN, Goldstick J, Cevallos W, Trueba G, Levy K, Scott J, Percha B, Segovia R, Ponce K, Hubbard A, Marrs C, Foxman B, Smith DL, Trostle J.

J R Soc Interface. 2012 May 7;9(70):1029-39. doi: 10.1098/rsif.2011.0499. Epub 2011 Sep 28.


Rapid changes in rotaviral genotypes in Ecuador.

Hasing ME, Trueba G, Baquero MI, Ponce K, Cevallos W, Solberg OD, Eisenberg JN.

J Med Virol. 2009 Dec;81(12):2109-13. doi: 10.1002/jmv.21632.


Raising the level of analysis of food-borne outbreaks: food-sharing networks in rural coastal Ecuador.

Trostle JA, Hubbard A, Scott J, Cevallos W, Bates SJ, Eisenberg JN.

Epidemiology. 2008 May;19(3):384-90. doi: 10.1097/EDE.0b013e31816a9db0.


Relating diarrheal disease to social networks and the geographic configuration of communities in rural Ecuador.

Bates SJ, Trostle J, Cevallos WT, Hubbard A, Eisenberg JN.

Am J Epidemiol. 2007 Nov 1;166(9):1088-95. Epub 2007 Aug 9.


Symptomatic and subclinical infection with rotavirus P[8]G9, rural Ecuador.

Endara P, Trueba G, Solberg OD, Bates SJ, Ponce K, Cevallos W, Matthijnssens J, Eisenberg JN.

Emerg Infect Dis. 2007 Apr;13(4):574-80.


High prevalence of enteroinvasive Escherichia coli isolated in a remote region of northern coastal Ecuador.

Vieira N, Bates SJ, Solberg OD, Ponce K, Howsmon R, Cevallos W, Trueba G, Riley L, Eisenberg JN.

Am J Trop Med Hyg. 2007 Mar;76(3):528-33.


Environmental change and infectious disease: how new roads affect the transmission of diarrheal pathogens in rural Ecuador.

Eisenberg JN, Cevallos W, Ponce K, Levy K, Bates SJ, Scott JC, Hubbard A, Vieira N, Endara P, Espinel M, Trueba G, Riley LW, Trostle J.

Proc Natl Acad Sci U S A. 2006 Dec 19;103(51):19460-5. Epub 2006 Dec 7.


Safety, immunogenecity, and efficacy of an autoclaved Leishmania amazonensis vaccine plus BCG adjuvant against New World cutaneous leishmaniasis.

Armijos RX, Weigel MM, Calvopina M, Hidalgo A, Cevallos W, Correa J.

Vaccine. 2004 Mar 12;22(9-10):1320-6.


Pharmacokinetics, pharmacodynamics, and relative pharmacokinetic/pharmacodynamic profiles of zaleplon and zolpidem.

Drover D, Lemmens H, Naidu S, Cevallos W, Darwish M, Stanski D.

Clin Ther. 2000 Dec;22(12):1443-61.


Pharmacokinetics of promethazine hydrochloride after administration of rectal suppositories and oral syrup to healthy subjects.

Strenkoski-Nix LC, Ermer J, DeCleene S, Cevallos W, Mayer PR.

Am J Health Syst Pharm. 2000 Aug 15;57(16):1499-505.


Comparison of the effects of zaleplon, zolpidem, and triazolam on memory, learning, and psychomotor performance.

Troy SM, Lucki I, Unruh MA, Cevallos WH, Leister CA, Martin PT, Furlan PM, Mangano R.

J Clin Psychopharmacol. 2000 Jun;20(3):328-37.


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