Bertiella studeri

This is one of two species of Bertiella that cause Bertielliasis in humans (the other being Bertiella mucronata). The majority of human cases occur in individuals who have some level of contact with non-humanprimates. Geographic distribution of cases demonstrate Bertiellia infection within countries from Asia, Africa, and the Americas.

Morphology

An adult B. studeri tapeworm measures 10–30 cm long, and is 1 cm wide. The adult develops in the small intestine of the primate host. Once the adult develops in the small intestine, section of proglottid are expelled through the anus every 2 to 3 days. The average length of a B. Studeri proglottid segment is 0.1 cm with an average width ranging from 0.68 to 1.10 cm. B. Studeri infection in humans is usually asymptomatic. Although, infection can also lead to gastrointestinal irritation, diarrhea, abdominal pain, anorexia, weight loss, vomit and/or constipation.