Dibothriocephalus latus: a case report in Southern Brazil / Dibothriocephalus latus: um relato de caso no Sul do Brasil

Fabiana Tais de Souza Hack, Gabriela Schiling Alves, Karhen Wiltgen Teixeira, Fairus Duarte Nasralla, Simone Ulrich Picoli


Diphyllobothriosis, an infection caused by an adult parasite of the genus Dibothriocephalus, is associated with the intake of raw or undercooked fish. This disease is worldwide in distribution and present sporadic outbreaks. A few cases of Dibothriocephalus infections have been reported in Brazil. This report aims at presenting the case of a male patient from Southern Brazil (Rio Grande do Sul) who was suffering from chronic diarrhea, tested positive for fecal occult blood and upon anamnesis reported eating sushi recently. A parasitological stool test was conducted using the spontaneous sedimentation technique and the microscopic analysis revealed the presence of typical structures of Dibothriocephalus latus. Due to the association between the consumption of raw fish such as salmon and diphyllobothriosis, it is extremely important to consider this infection among the symptomatic population who eats raw or undercooked fishes.


Diarrhea. Diphyllobothriosis. Fecal occult blood test. Undercook fish.


Semenas L, Kreiter A, Urbanski J (2001) New cases of human diphyllobothriosis in Patagonia, Argentine. Rev Saúde Pública 35(2):214-16. http://dx.doi.org/10.1590/S0034-89102001000200017

Mathison BA, Pritt BS (2019) Medical Parasitology Taxonomy Update, 2016–2017. J Clin Microbiol 57(2) e01067-18. https://doi.org/10.1128/JCM.01067-18

Crompton DWT (1999) How much human helminthiasis is there in the world? J Parasitol 85:397-403. https://www.jstor.org/stable/3285768

Kuchta R, Scholz T, Brabec J, Narduzzi-Wicht B (2015) Chapter 17. Diphyllobothrium, Diplogonoporus and Spirometra. In: Xiao L, Ryan U, Feng F, editors. Biology of Foodborne Parasites Section III Important Foodborne Helminths: CRC Press. pp. 299–326.

Von Bonsdorff B (1977) Diphyllobothriasis in man. Academic Press Inc. (London)

Ltd, London.

Semenas Liliana, Kreiter Ana, Urbanski Javier. New cases of human diphyllobothriosis in Patagonia, Argentine. Rev. Saúde Pública [Internet]. 2001 Apr [cited 2020 Dec 29] ; 35( 2 ): 214-216. Available from: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-89102001000200017&lng=en. https://doi.org/10.1590/S0034-89102001000200017.

Rausch RL, Hilliard DK (1970) Studies on the helminth fauna of Alaska. XLIX. The occurrence of Diphyllobothrium latum (Linnaeus, 1758) (Cestoda: Diphyllobothriidae) in Alaska, with notes on other species. Can J Zool 48(6):1201-19. https://doi.org/10.1139/z70-210

Food and Drug Administration. Parasites. In: Fish and Fishery Products Hazards and Controls Guidance (4th ed) Washington, p. 91-8. https://www.fda.gov/media/80637/download

Coutinho E (1957) Tratado de clínica das doenças infectuosas, parasitárias e peçonhentas. 6th ed. Rio de Janeiro, Guanabara Koogan.

Oliveira SSS, Nunes EC, De Sousa APP, Marques FD, Ramos IS, Silva MB, et al (2017) Estudo do número de casos de difilobotriase no Brasil. Biofarm 13(2):29-38.

Cabello FC (2007) Salmon aquaculture and transmission of the fish tapeworm. Emerg Infect Dis. 13(1):169–71. doi: 10.3201/eid1301.060875

Cabello FC (2007) Aquaculture and public health. The emergence of diphyllobothriasis in Chile and the world. Rev Méd Chile 135:1064-71. doi:10.4067/s0034-98872007000800016

Sampaio JL, de Andrade VP, Lucas M, Fung L, Gagliardi SM, Santos SR, et al (2005) Diphyllobothriasis, Brazil. Emerg Infect Dis 11(10):1598-1600. doi:10.3201/eid1110.050377

Emmel VE, Inamine E, Secchi C, Brodt TCZ, Amaro MCO, Cantarelli VV, Spalding S (2006) Diphyllobothrium latum: case report in Brazil. Rev Soc Bras Med Trop 39(1):82-4. http://dx.doi.org/10.1590/S0037-86822006000100017

DOI: https://doi.org/10.34117/bjdv7n1-437


  • There are currently no refbacks.