Dr. Jennifer Ketzis


Dr. Jennifer Ketzis received her PhD from Cornell University, where she focused on international livestock production and the use of medicinal plants to control Haemonchosis in goats. She then took a position at Novartis Animal Health in Switzerland working on the development of natural based products and endo- and ecto-parasiticides. In 2005, as a Senior Scientist, she established a parasitology laboratory at Charles River Laboratories, Ireland, where she worked with several international Animal Health companies designing and managing GCP ecto- and endo-parasite efficacy studies. In 2012, Dr. Ketzis joined Ross University School of Veterinary Medicine.  


  1. Eisenbraun H, Alluwie A, Connolly S, Nair R, Verocaic GG, Ketzis JK. Comparison of fecal analysis methods for the detection of Platynosomum fastosum in naturally infected cats. On-line May 2019 Feline Medicine and Surgery. https://doi.org/10.1177/1098612X19848173 
  2. Hobbs EC, Mwape KE, Phiri AM, Mambwe M, Mambo R, Thys S, Zulu G, Chembensofu M, Trevisan C, Van Damme I, Phiri IK, Devleesschauwer B, Ketzis JK, Dorny P, Willingham AL, Gabriël S. 2019. Perceptions and acceptability of piloted Taenia solium control and elimination interventions in two endemic communities in eastern Zambia. Accepted April 2019 Transboundary and Emerging Diseases. 
  3. Hobbs EC, Mwape KE, Devleesschauwer B, Van Damme I, Krit M, Berkvens D, Zulu G, Mambwe M, Chembensofu M, Trevisan C, Baauw J, Phiri IK, Speybroeck N, Ketzis J, Dorny P, Willingham AL, Gabriël S. Effects of ‘The Vicious Worm’ educational tool on Taenia solium knowledge retention in Zambian primary school students after one year. PLOS Neglected Tropical Diseases. Accepted Mar 2019 
  4. Pompei Bolfa P, Ketzis J, Marchi S, Kelly P, Cheng T, Huynh H, Lavinder T, Boey K, Hamilton C, Callanan JJ. Infections and pathology of free-roaming backyard chickens on St. Kitts, West Indies. Accepted March 2019. JVDI 
  5. Gallagher C, Beierschmitt A, Cruz K, Choo J, Ketzis J. Should monkeys wash their hands and feet: a pilot-study on sources of zoonotic parasite exposure. Accepted March 2019 One Health 
  6. Geng J, Elsemore D, Oudin N, Ketzis JKK. 2018. Diagnosis of feline whipworm infection using a coproantigen ELISA and the prevalence in feral cats in southern Florida. Vet Parasitol Reg Studies and Reports. 4, 181-186. https://doi.org/10.1016/j.vprsr.2018.11.002 
  7. Brandon-Mong G-J, Ketzis J, Yasiri A, Mahboob T, Tian-Chye T, Nissapatorn V. 2018. DNA Barcoding relates Trichuris species from a human and man’s best friend to non-human primate sources. Tropical Biomedicine. 35. 
  8. Červená B, Hrazdilová K, Vallo P, Ketzis J, Bolfa P, Tudor E, Lux-Hoppe EG, Blanvillain C, Modrý D. 2018. Mammomonogamus nematodes in felid carnivores: a minireview and the first molecular characterization. Parasitology 1–10. https://doi.org/10.1017/S0031182018000768  
  9. Yao C, Ketzis J. 2018. Aberrant and accidental trichomonad flagellate infections: rare or underdiagnosed? Transactions RSTMH. Online March 2018. Doi.org/10.1093/trstmh/try027 
  10. Lanthroum CM, Shell L, Neuville K, Ketzis JKK. 2018. Efficacy of praziquantel in the treatment of Platynosomum fastosum in cats with natural infections. Vet Sci 5:35. doi:10.3390/vetsci5020035  
  11. Cheng T, Halper B, Siebert J, Cruz-Martinez L, Chapwanya A, Kelly P, Ketzis J, Vessell J, Köster L, Yao 2018. C. Endo- and ecto-parasites of small Indian mongoose, Herpestes auropunctatus, on St. Kitts, West Indies. Parasitol Res. 117, 989-994. doi: 10.1007/s00436-018-5773-2.. 
  12. Yao C, Walkush J, Shim D, Zuniga Brenes K, Ketzis J. 2018. Molecular species identification of Trichuris trichiura in African green monkey on St. Kitts, West Indies. Vet Parasitol: Regional Studies and Reports 11:22-26. https://doi.org/10.1016/j.vprsr.2017.11.004 
  13. Conan A, Napier P, Shell L, Knobel D, Dundas J, Scorpio D, Ketzis J. 2017. Heterogeneous distribution of Dirofilaria immitis in dogs in St Kitts, West Indies, 2014-2015. Vet Parasitol: RS&R 10:139-142. https://doi.org/10.1016/j.vprsr.2017.10.006 
  14. Ketzis J. 2017. Limitations to the adoption of a standardized Strongyloides stercoralis diagnostic method: case study in the Caribbean. Acta Tropica. 170:178-183. doi10.1016/j.actatropica.2017.03.003.  
  15. Jenkins S, Ketzis JK, Dundas J, Scorpio D. 2017. A randomized controlled pilot study to assess the efficacy of minocycline in the treatment of naturally occurring Ehrlichia canis infection in dogs. JVIM. doi: 10.1111/jvim.14842. [Epub ahead of print] 
  16. Navarro R, Chan Y, Nair R, Peda A, Aung MS, Ketzis J, Malik YS, Kobayashi N, Ghosh S. 2017. Molecular characterization of complete genomic segment-2 of picobirnavirus strains detected in a cat and a dog. Infect Genet Evol. 54:200-204. 
  17. Navarro R, Wahlen K, Streiff D, Ketzis JK. 2017. Pilot study: Occurrence of ear mites and the otic flora in domestic ruminants on St. Kitts. Vet Parasitol: Regional Studies and Reports. E pub 2 July. https://doi.org/10.1016/j.vprsr.2017.06.010 
  18. Ketzis J, Conan A. 2017. Estimating occurrence of Strongyloides stercoralis in the Caribbean island countries: implications for monitoring and control. Acta Tropica. 171:90-95. doi: 10.1016/j.actatropica.2017.03.037.  
  19. Gallagher CA, Navarro R, Zuniga-Brenes K, Aung MS, Ng A, Bajak E, Beierschmitt A, Lawrence M, Dore KM, Ketzis J, Malik YS, Kobayashi N, Ghosh S. 2017. Detection of picobirnaviruses in Vervet Monkeys (Chlorocebus sabaeus): molecular characterization of complete genomic segment-2. Virus Res. 230:13-18. doi: 10.1016/j.virusres.2016.12.021 
  20. Köster LS, Shell L, Ketzis J, Rajeev S, Illanes O. 2017. The diagnosis of pancreatic disease in feline platynosomosis. J Feline Med Surg. Epub Jan 1. doi: 10.1177/1098612X16685676  
  21. Navarro R, Aung MS, Cruz K, Ketzis J, Gallagher CA, Beierschmitt A, Malik YS, Kobayashi N, Ghosh S. 2016. Whole genome analysis provides evidence for porcine-to-simian interspecies transmission of rotavirus-A. Infect Genet Evol. 49:21-31. 
  22. Ketzis J, Dundas J, Shell L. 2016. Lynxacarus radovskyi mites in feral cats: a study of diagnostic methods, preferential body locations, co-infestations and prevalence. Vet Dermatol. 27:425-e108. doi: 10.1111/vde.12353 
  23. Köster L, Shell L, Illanes O, Lathroum C, Neuville K, Ketzis J. 2016. Percutaneous ultrasound-guided cholecystocentesis and bile analysis for the detection of Platynosomum spp. induced cholangitis in cats. J Vet Intern Med. 30:787-93. doi: 10.1111/jvim.13943. Epub 2016 Apr 5. 
  24. Thamsborg SM, Ketzis J, Horii Y, Matthews JB. 2016. Strongyloides spp. infections of veterinary importance. Parasitol 4:1-11 (epub). doi: 10.1017/S0031182016001116. 
  25. Ketzis J, Fogarty E, Marttini K, Bowman D. 2016. Explaining premunition with kin selection using Haemonchus contortusParasitol. 143:1187-92. doihttp://dx.doi.org/10.1017/S0031182016000561. 
  26. Hawash MBF, Betson M, Al-Gabury A, Ketzis J, Willingham AL, Bertelsen MF, Cooper PJ, Littlewood DTJ, Zhu X-Q, Nejsum P. 2016. Whipworms in humans and pigs: Origins and demography. Parasites & Vectors 9:37. doi:10.1186/s13071-016-1325-8.