Symptomatology of taeniasis caused by Taenia saginata.

The course of an infection with T. saginata has been studied for two years on a volunteer who had swallowed a 16-20 week-old Cysticercus bovis. The pathognomonic character of the infections was shown to be the spontaneous release of cestode proglottids first appearing in the faeces at day 87 p. i. An incidental release of a larger number of segments occurred after an excessive consumption of alcohol. The next release of proglottids followed after 42 to 88 days. The importance of the results of this observation both for the immediate study of the field case and an elucidation of the epidemiology of taeniasis has been evaluated in the present paper.