New Bolton Center Kennett Square, PA
Emergencies & Appointments:
Ryan Hospital Philadelphia, PA


Assistant Professor of Clinical Parasitology, University of Pennsylvania School of Veterinary Medicine
Contact Information:

Sobotyk, C., Nguyen, N., Negron, V., Varner, A., Saleh, M. N., Hilton, C., Tomecek, J. M., Esteve-Gasent, M. D., Verocai, G. G. Detection of Dirofilaria immitis via integrated serological and molecular analyses in coyotes from Texas, United States Int J Parasitol Parasites Wildl 18: 20-24, 2022.

St Jean, S. C., Bryan, L. K., Sobotyk, C., Verocai, G. G. Pathology in Practice J Am Vet Med Assoc 259: 1-3, 2022.

Upton, K. E., Sobotyk, C., Edwards, E. E., Verocai, G. G. Dirofilaria immitis in an Asian small-clawed otter (Aonyx cinereus) from southeastern Louisiana, United States Vet Parasitol Reg Stud Reports 29: 100703, 2022.

Wallitsch, K., Jaffey, J. A., Ferguson, S., Verocai, G. G., Sobotyk, C., van Eerde, E., Bashaw, S. Extensive Aberrant Migration of Onchocerca lupi in a Dog Top Companion Anim Med 49: 100666, 2022.

Zarate-Rendon, D. A., Salazar-Espinoza, M. N., Catalano, S., Sobotyk, C., Mendoza, A. P., Rosenbaum, M., Verocai, G. Molecular characterization of Dipetalonema yatesi from the black-faced spider monkey (Ateles chamek) with phylogenetic inference of relationships among Dipetalonema of Neotropical primates Int J Parasitol Parasites Wildl 17: 152-157, 2022.

Verocai, G. G., Sobotyk, C., Lamison, A., Borst, M. M., Edwards, E. E. Autochthonous, zoonotic Onchocerca lupi in a South Texas dog, United States Parasit Vectors 14: 203, 2021.

Sobotyk, C., Savadelis, M. D., Verocai, G. G. Detection and cross-reaction of Dirofilaria repens using a commercial heartworm antigen test kit Veterinary parasitology 289: 109302, 2021.

Sobotyk, C., Upton, K. E., Lejeune, M., Nolan, T. J., Marsh, A. E., Herrin, B. H., Borst, M. M., Piccione, J., Zajac, A. M., Camp, L. E., Pulaski, C. N., Starkey, L. A., von Simson, C., Verocai, G. G. Retrospective study of canine endoparasites diagnosed by fecal flotation methods analyzed across veterinary parasitology diagnostic laboratories, United States, 2018 Parasit Vectors 14: 439, 2021.

Park, J. Y., Sobotyk, C., Edwards, E. E., Porter, B. F., Verocai, G. G. Fatal cerebral cuterebrosis in a dog Vet Parasitol Reg Stud Reports 26: 100636, 2021.

Sobotyk, C., Foster, T., Callahan, R. T., McLean, N. J., Verocai, G. G. Zoonotic Thelazia californiensis in dogs from New Mexico, USA, and a review of North American cases in animals and humans Vet Parasitol Reg Stud Reports 24: 100553, 2021.

Diaz-Delgado, J., Cruz, D., Sobotyk, C., Hensley, T., Anguiano, M., Verocai, G. G., Gomez, G. Pathologic features and molecular identification of parelaphostrongylosis in a sitatunga (Tragelaphus spekii) J Vet Med Sci 83: 1476-1480, 2021.

Febronio, A. M. B., Boos, G. S., Batista, R. L. G., Amorim, D. B., Guimaraes, J. P., Bianchi, M. V., Mariani, D. B., Koproski, L., Mari, C., Parente, J. E. V., Sonne, L., Werneck, M. R., Marques, S. M. T., Driemeier, D., Kolesnikovas, C. K. M., Groch, K. R., Sobotyk, C., Verocai, G. G., Groch, K. R., Diaz-Delgado, J. Crassicaudiasis in three geographically and chronologically distant Cuvier''s beaked whales (Ziphius cavirostris) stranded off Brazil Int J Parasitol Parasites Wildl 16: 262-269, 2021.

Hasse, K. E., Garner, M. M., Knightly, F. A., Sobotyk, C., Luksovsky, J. L., Verocai, G. G. Fatal Fascioloides Magna in a Lesser Spot-Nosed Guenon (Cercopithecus Petaurista) J Zoo Wildl Med 52: 1309-1313, 2021.

de Oliveira, Caroline Sobotyk, Savadelis, Molly D, McLean, Nancy Johnstone, Verocai, Guilherme G Assessing the potential cross-reactivity using a commercial heartworm ELISA kits of serum from dogs naturally infected with Onchocerca lupi Veterinary parasitology 280: 109070, 2020.

Oliveira, C. S., Ratzlaff, F. R., Potter, L., Romao, P. R. T., Botton, S. A., Vogel, F. S. F., Sangioni, L. A. Clinical and Pathological Aspects of Canine Cutaneous Leishmaniasis: A Meta-analysis Acta Parasitologica 64: 916-922, 2019.

Abreu, J. A. P., Krawczak, F. D. S., Guedes, I. B., Souza-Filho, A. F., Souza, G. O., Binder, L. C., de Oliveira, C. S., Sponchiado, J., Melo, G. L., Labruna, M. B., Heinemann, M. B. Frequency of anti-Leptospira spp. antibodies in dogs and wild small mammals from rural properties and conservation units in southern Brazil One Health 8: 100104, 2019.

Alves, M. E. M., Cadore, G. C., Oliveira, C. S., Portella, L. P., Sangioni, L. A., Vogel, F. S. F. Molecular characterization of Sarcocystis spp. in samples of meat Pesquisa Veterinaria Brasileira 38: 425-429, 2018.

Gressler, L. T., Krawczak, F. D. S., Knoff, M., Monteiro, S. G., Labruna, M. B., Binder, L. C., Oliveira, C. S., Notarnicola, J. Litomosoides silvai (Nematoda: Onchocercidae) parasitizing Akodon montensis (Rodentia: Cricetidae) in the southern region of Brazil Rev Bras Parasitol Vet 26: 433-438, 2017.

Oliveira, C. S., Braunig, P., Krawczak, F., Labruna, M. B., Botton, S. A., Vogel, F. S. F., Sangioni, L. A. Detection of immunoreactive proteins of Rickettsia sp Atlantic Forest strain Pesquisa Veterinaria Brasileira 37: 52-57, 2017.

Krawczak, F. S., Binder, L. C., Oliveira, C. S., Costa, F. B., Moraes-Filho, J., Martins, T. F., Sponchiado, J., Melo, G. L., Gregori, F., Polo, G., Oliveira, S. V., Labruna, M. B. Ecology of a tick-borne spotted fever in southern Brazil Exp Appl Acarol 70: 219-29, 2016.

Krawczak, F. S., Martins, T. F., Oliveira, C. S., Binder, L. C., Costa, F. B., Nunes, P. H., Gregori, F., Labruna, M. B. Amblyomma yucumense n. sp. (Acari: Ixodidae), a Parasite of Wild Mammals in Southern Brazil J Med Entomol 52: 28-37, 2015.

Oliveira, Caroline Sobotyk de, Camillo, Giovana, Cadore, Gustavo Cauduro, Bagolin, Cássia, Anjos, Sonia Terezinha Lopes dos, Sangioni, Luis Antônio, Vogel, Fernanda Silveira Flores Detection of anti-Toxoplasma gondii antibodies in domestic felines R. Inst. Adolfo Lutz : 131-133, 2014.

Maciel, J. F., Krawczak, F. D., de Oliveira, C. S., Moraes, J., Labruna, M. B., Botton, S. D., Vogel, F. S. F., Sangioni, L. A. Detection of anti - Rickettsia spp. antibodies in domestic chickens of extensive breeding in an endemic area for spotted fever in the state of Rio Grande do Sul, Brazil Ciência Rural 43: 2037-2041, 2013.

Toscan, Gustavo, Camillo, Giovana, Weber, Augusto, de Oliveira, Caroline Sobotyk, Gonçalves, Paulo Bayard Dias, Sangioni, Luis Antonio, Vogel, Fernanda Silveira Flores Detection of nucleic acids in tissues of gerbils submitted to acute infection with Neospora caninum/Deteccao de acidos nucleicos em tecidos de gerbils submetidos a infeccao aguda por Neospora caninum Ciência Rural 42: 1865-1872, 2012.