The animal reservoirs of Trypanosoma rhodesiense and Trypanosoma gambiense

Abstract

In October, 1934, clean laboratory~bred Glossina morsitans were fed on an untreated case of Rhodesian sleeping sickness (Corson, 1936). The strain of T. rhodesiense thus isolated, has since been passaged through sheep by cyclically infected, laboratory~bred G. morsitans, and each year its infectivity to man has been tested. The strain was still infective to man when tested early in 1953 (Annual Report, E.A.T.T.R.R.O.), i.e. 18 1/2 years after its isolation from the patient.