On the discovery of a species of trypanosoma in the cerebrospinal fluid of cases of sleeping sickness

Abstract

On the 12th November, 1902, when examining a specimen of cerebro-spinal fluid taken by lumbar puncture during life from a well-marked case sleeping sickness , I was surprised to observe a living trypanosoma. Since that date I have made as many observations in this direction as possible, and the results are to my mind sufficiently surprising to excuse me for presenting this preliminary note.