36 



SLEEriNG SICKNESS IN THE ANGLO-EGYPTIAN SUDAN 



The infected 

 area 



Summary of 

 precautionary 



crossing the Yei at Luri Rapids and thence north down tlie east bank to Lorella, and from 

 Lorella, again east to Buiidukia. This was one of the places where the natives reported 

 sleeping sickness existed, but none could be discovered, neither was any found in the 

 villages between here and Lado. G. morsitans was very numerous in places, but no 

 i.f. palpalis was found farther north than Wandi. 



As a result of his investigations Captain Mackenzie concludes:- - 



1. That a line drawn from Loka to Bangali and thence to Libogo, from there along 

 the watershed to the source of the Tor, then down the Tor to just north of Beringi 

 and thence to Loka, would enclose the area which is at present infected with sleeping 

 sickness (Fig. 8). 



2. That there are probably a few isolated cases outside this area occurring in men 

 who have been working and become infected in Yei. 



3. That G. palpali.i is to be found near water in most of tlie area above mentioned. 



4. That G. palpalin also extends all along the River Tor and its tributaries, and 

 also northwards along the River Yei. (Fig. 9). 



In the meantime, another British Medical Officer was engaged to carry on sleeping 

 sickness work, and, on the return of Captain Mackenzie, this Officer, Captain 

 R. J. C. Thompson, R.A.M.C., went to the Lado as S.M.O., and was accompanied by 

 two Egyptian Medical Officers to assist hiui. Owing to it being the rainy season, he 

 has found that clearing is difficult, but a great deal has already been accomplished 

 around Yei on both banks of the river, and G. palpalis is now reported as 

 rarely seen. 



The sleeping sickness cases are being marked dow'n, and will shortly be collected 

 in a camp in a fly-free area. 



Regulations have been drawn up with regard to the importation of porters, and 

 communication with the Bahr-El-Ghazal prohibited, and it is hoped, in a relatively short 

 period, to have final arrangements for dealing with the disease in the Lado, complete. 



In conclusion, I recapitulate the measures that have been taken as a result of 

 recommendations advanced, and the information obtained by the Medical Officers of the 

 Egyptian Army on behalf of the Sudan Sleeping Sickness Commission. 



1. An Inspection Post has been established on the Nile at Mongalla. 



2. Lado. 



{a) Mapping of the country showing fly areas, and areas proved to be infected with 

 sleeping sickness. 



(6) Notifying all cases, in order that tlu'v may be moved to a sleeping sickness camp as 

 soon as possible. 



(c) Clearing fly areas round Yei and Kagelu posts. 



(rf) Enforcing of regulations regarding traders, porters, etc. 



3. Bahr-El-Ghazal. Eastern Boundary. 



(n) Establishing an Inspection Post at M'volo, which latter station has been moved to 

 a more healthy site in a fly-free area. 



(h) Medical Officers at Meridi and Yambio warned to examine all natives arriving from 

 the Lado, or Congo Free State. 



4. Bahr-El-Ghazal. Wi'sfern Bnimdari/. 



(a) Quarantine Stations and Inspection Posts established on the main trade routes, 

 (fc) A vast amount of clearing carried out. 



(c) Special regulations issued dealing with traders, porters and refugees from 

 the French Congo. 



