?21
tember about 90 of these people went to an evacuation-camp.   Up to this time
the following had occurred:-
Population.
Plague attacks.
Plague deaths.
Inoculated          ...       423
13 (3.04%)
6 (1.38%)
Not inoculated   ...          13
7 (53.8%)
6 (46ˇ1%)
If the inoculated had suffered to the same extent as those not inoculated,
they ought to have had 228 cases with 195 deaths instead of 13 and 6 respective-
ly; a reduction of 94.2 per cent. in the attacks and of 96.9 per cent. in the
deaths. By the end of September plague had almost ceased in the vicinity of this
camp, and only one more case occurred in an uninoculated individual. None of
the inoculated contacts developed plague, and on no occasion did more than one
case occur in any one room. Captain Stevenson remarks on this and says, "I do
not see that this result can reasonably be put down to anything but the fact that
these contacts were all inoculated."
Engrais Mauricien Camp.-"This camp held 70 men and 82 women and
children. Thirty of the men and 6 of the women and children were inoculated in
July. Plague attacked the camp in October and 13 cases occurred in the first
fortnight of that month, none of whom had been inoculated. The camp was
then evacuated and its inmates inoculated with the exception of 37 individuals."
The following table shows the events both before and after evacuation.
The number of deaths is not reported:-


Population.

Plague attacks.
Inoculated
{Before evacuation ... 
36 
...

{After evacuation ...
115
4(3.4%)




Not inoculated
{Before evacuation ... 
116 
13 (11.2%) 

{After evacuation ...
37
4 (10.8%)

Of the four inoculated cases, one developed symptoms one day and another
three days after operation.
Albion and Colonial Dock Camps.-In these camps the whole of the
inhabitants were inoculated, and there is therefore no unprotected population
living under the same conditions for comparison, It is not then possible to
say what would have happened had the inhabitants not been inoculated. In
the Albion Dock Camp with 500 inhabitants there were 12 cases of plague with
6 deaths, or a percentage of 2.4 and 1.2 respectively. In the Colonial Dock
Camp with a population of 70 there were 10 cases of plague with 7 deaths, or
14.2 and 10 per cent. respectively.
Several interesting examples are given in this report of the effect produced
by the inoculation of the coolies working on the sugar estates. The result was
invariably good, and it is therefore only necessary to refer briefly to the more
striking examples.
L'Espérance Estate.-Attached to this sugar estate is a camp of over 1,100
persons. On October 2nd a case of plague was discovered and on the 5th of
the same month 159 of the inhabitants were inoculated. No more could be
operated on as the stock of vaccine in the island was exhausted. Before the
new supply arrived in the course of six weeks the following had occurred:-
Population.
Plague attacks.
Plague deaths.
Inoculated ...        ...  159
4 (2.5%)
1 (0ˇ6%)
Not inoculated      ...    956
68 (7.0%)
54 (5.6%)
? 42-6