418 
Tsetse Flies and Trypanosomiasis 
These measures were enforced only within the limits of Uganda Protec¬ 
torate. Different policies prevailed in the neighbouring fly areas of German 
East Africa and British East Africa. The Germans combined deforestation 
measures with a limited depopulation scheme applied to certain particularly 
“ dangerous ” localities. In British East Africa the natives were left in contact 
with the fly, an attempt to encourage voluntary segregation and isolation from 
the fly proving abortive. 
III. OUTCOME OF THE MEASURES. 
As a result of these measures the most sanguine hopes were realised as 
regards the stamping out of the disease in the fly zone of Uganda Protectorate. 
In British East Africa, along the shores of the Kavirondo Gulf, the epi¬ 
demic apparently worked itself out after causing a very heavy mortality. The 
disease in this area now appears to be endemic and the population is reported 
to be again increasing. 
As regards German East Africa the authorities there described the measures 
pursued as “ completely successful,” yet they admit that isolated cases of fresh 
infection occurred from time to time. 
IV. EXAMINATION OF THE AVAILABLE STATISTICS BEARING 
ON THE EPIDEMIC. 
The figures quoted here are derived from official returns from the P.M.O.’s 
office and the Secretariat at Entebbe. 
In endeavouring to arrive at a true conception of the percentage of deaths 
to the total population exposed to the fly, data from the islands afford much 
more definite and reliable information than do figures from the mainland. 
Except on the big island of Buvuma, nowhere on the islands could the natives 
get more than miles from the shore, and there was constant canoe traffic 
between the various islands and with the mainland, to say nothing of wholesale 
fishing. 
On the mainland, however, a large proportion of the population lived well 
outside the fly zone. Some might never see a tsetse fly and others only very 
occasionally be exposed to fly bite. 
The total number of deaths returned as by sleeping sickness in the kingdom 
or province of BUganda, including the Sesse and Buvuma Islands, from 1900 
to the end of August, 1915, is as follows: 
1900 
8.430 
1908 
1,783 
1901 
10,384 
1909 
925 
1902 
24,035 
1910 
547 
1903 
12,891 
1911 
253 
1904 
11,251 
1912 
82 
1905 
8,003 
1913 
57 
1906 
5,304 
1914 
24 
1907 
3,407 
1915 
2 1 
1 Since 1915 the deaths by sleeping sickness in Buganda Kingdom or Province have been 
very few—exact returns are not available at time of writing. 
