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Karen Poh
Animal Disease Research
Research Entomologist

Phone: (509) 335-6334
Fax:

(Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)

Projects
Control Strategies for Bovine Babesiosis
In-House Appropriated (D)
  Accession Number: 441168
Control Strategies for Theileriosis
In-House Appropriated (D)
  Accession Number: 441269
Identifying Effective Immune Responses and Vaccine Development for Bovine Anaplasmosis
In-House Appropriated (D)
  Accession Number: 441274
Ticks and Tick-Borne Pathogens Affecting Livestock in Zimbabwe
Non-Assistance Cooperative Agreement (S)
  Accession Number: 444409

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Commercial products are not effective at repelling European deer keds, Lipoptena cervi (Diptera: Hippoboscidae) but may increase mortality after exposure Reprint Icon - (Peer Reviewed Journal)
Skvarla, M.J., Poh, K.C., Norman, C., Machtinger, E.T. 2024. Commercial products are not effective at repelling European deer keds, Lipoptena cervi (Diptera: Hippoboscidae) but may increase mortality after exposure. Journal of Medical Entomology. 1-8. https://doi.org/10.1093/jme/tjae109.
Haemaphysalis longicornis (Acari: Ixodidae) does not transmit Babesia bovis, a causative agent of cattle fever Reprint Icon - (Peer Reviewed Journal)
Poh, K.C., Aguilar, M., Capelli-Peixoto, J., Davis, S.K., Ueti, M.W. 2024. Haemaphysalis longicornis (Acari: Ixodidae) does not transmit Babesia bovis, a causative agent of cattle fever. Ticks and Tick Borne Diseases. 15:(6). https://doi.org/10.1016/j.ttbdis.2024.102374.
Knowledge and perception of equine ticks and tick-borne diseases of Pennsylvania horse owners and caretakers Reprint Icon - (Peer Reviewed Journal)
Smarsh, D.N., Kenny, L.B., Spindler, M., Poh, K.C., Machtinger, E.T. 2024. Knowledge and perception of equine ticks and tick-borne diseases of Pennsylvania horse owners and caretakers. Journal of Equine Veterinary Science. 139. Article 105092. https://doi.org/10.1016/j.jevs.2024.105092.
Nilgai antelope display no signs of infection upon experimental challenge with a virulent Babesia bovis strain Reprint Icon - (Peer Reviewed Journal)
Johnson, T.L., Persinger, K.A., Taus, N.S., Davis, S.K., Poh, K.C., Kappmeyer, L.S., Laughery, J.M., Capelli-Peixoto, J., Lohmeyer, K.H., Ueti, M.W., Olafson, P.U. 2024. Nilgai antelope display no signs of infection upon experimental challenge with a virulent Babesia bovis strain. Parasites & Vectors. 17. Article 245.. https://doi.org/10.1186/s13071-024-06316-3.
An assessment of equine veterinarian knowledge and perceptions of ticks and tick-borne diseases in the United States to inform continuing education needs Reprint Icon - (Peer Reviewed Journal)
Machtinger, E.T., Smarsh, D.N., Kenny, L.B., Poh, K.C., Orr-Gissinger, E.L., Kirkland, B.G., Springer, H.R. 2023. An assessment of equine veterinarian knowledge and perceptions of ticks and tick-borne diseases in the United States to inform continuing education needs. Equine Veterinary Journal. https://doi.org/10.1111/eve.13931.
An integrative framework for tick management: The need to connect wildlife science, One Health, and interdisciplinary perspectives Reprint Icon - (Peer Reviewed Journal)
Machtinger, E.T., Poh, K.C., Pesapane, R., Tufts, D.M. 2023. An integrative framework for tick management: The need to connect wildlife science, One Health, and interdisciplinary perspectives. Insect Science. 61. Article 101131. https://doi.org/10.1016/j.cois.2023.101131.
A comparison of European deer keds (Diptera: Hippoboscidae: Lipoptena cervi (Linnaeus)) and blacklegged ticks (Ixodida: Ixodidae: Ixodes scapularis say) on elk (Cervus canadensis (Erxleben)) and white-tailed deer (Odocoileus - (Peer Reviewed Journal)
Skvarla, M.J., Poh, K.C., Norman, C., Struckhoff, D.E., Machtinger, E. 2023. A comparison of European deer keds (Diptera: Hippoboscidae: Lipoptena cervi (Linnaeus)) and blacklegged ticks (Ixodida: Ixodidae: Ixodes scapularis say) on elk (Cervus canadensis (Erxleben)) and white-tailed deer (Odocoileus virginianus (Zimmermann, 1780)) in Pennsylvania. Journal of the Entomological Society of Ontario. 154. Article jeso2023004.
Differential burdens of blacklegged ticks (Ixodes scapularis) on sympatric rodent hosts Reprint Icon - (Peer Reviewed Journal)
Brown, J.E., Tiffin, H.S., Pagac, A., Poh, K.C., Evans, J.R., Miller, T.M., Herrin, B.H., Tomlinson, T., Sutherland, C., Machtinger, E.T. 2023. Differential burdens of blacklegged ticks (Ixodes scapularis) on sympatric rodent hosts. Journal of Vector Ecology. 49(1):44-52. https://doi.org/10.52707/1081-1710-49.1.44.
Dermacentor variabilis does not transstadially transmit the U.S. isolate of Theileria orientalis Ikeda: A controlled acquisition and transmission study Reprint Icon - (Peer Reviewed Journal)
Onzere, C.K., Hassan, A., Herndon, D.R., Oyen, K.J., Poh, K.C., Scoles, G.A., Fry, L.M. 2023. Dermacentor variabilis does not transstadially transmit the U.S. isolate of Theileria orientalis Ikeda: A controlled acquisition and transmission study. Parasitologia. 3(3):284-292. https://doi.org/10.3390/parasitologia3030029.
Local influence of floral resource attributes on urban bumble bee foraging activity Reprint Icon - (Peer Reviewed Journal)
Pfeiffer, V.W., Zhu, J., Poh, K.C., Sibernagel, J. 2023. Local influence of floral resource attributes on urban bumble bee foraging activity. Frontiers in Sustainable Cities. 5. Article 1103721. https://doi.org/10.3389/frsc.2023.1103721.
A U.S. isolate of Theileria orientalis ikeda is not transstadially transmitted to cattle by Rhipicephalus microplus Reprint Icon - (Peer Reviewed Journal)
Onzere, C.K., Herndon, D.R., Hassan, A., Oyen, K.J., Poh, K.C., Scoles, G.A., Fry, L.M. 2023. A U.S. isolate of Theileria orientalis ikeda is not transstadially transmitted to cattle by Rhipicephalus microplus. Pathogens. 12(4). Article 559. https://doi.org/10.3390/pathogens12040559.
Topical permethrin may increase blacklegged tick (Ixodes scapularis) repellency but is associated with cutaneous irritation in horses Reprint Icon - (Peer Reviewed Journal)
Poh, K.C., Cole, Z.T., Smarsh, D.N., Springer, H.R., Kelly, K., Kenny, L.B., Machtinger, E.T. 2023. Topical permethrin may increase blacklegged tick (Ixodes scapularis) repellency but is associated with cutaneous irritation in horses. American Journal of Veterinary Research. 84(4). https://doi.org/10.2460/ajvr.22.10.0176.
Insights into the genetic landscape and presence of Cochliomyia hominivorax in the Caribbean Reprint Icon - (Peer Reviewed Journal)
Tietjen, M., Pfeiffer, V., Poh, K.C. 2022. Insights into the genetic landscape and presence of Cochliomyia hominivorax in the Caribbean. Parasitology Research. 122:547-556. https://doi.org/10.1007/s00436-022-07757-4.
Limited detection of shared zoonotic pathogens in deer keds and blacklegged ticks co-parasitizing white-tailed deer in the eastern United States Reprint Icon - (Peer Reviewed Journal)
Olafson, P.U., Poh, K.C., Evans, J.R., Skvarla, M.J., Matchinger, E.T. 2022. Limited detection of shared zoonotic pathogens in deer keds and blacklegged ticks co-parasitizing white-tailed deer in the eastern United States. Medical and Veterinary Entomology. 37(2):179-188. https://doi.org/10.1111/mve.12620.
All for one health and one health for all: Considerations for successful citizen science projects conducting vector surveillance from animal hosts Reprint Icon - (Peer Reviewed Journal)
Poh, K.C., Evans, J.R., Skvarla, M.J., Machtinger, E.T. 2022. All for one health and one health for all: Considerations for successful citizen science projects conducting vector surveillance from animal hosts. Insects. 13(6). Article 492. https://doi.org/10.3390/insects13060492.
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