1
WEEKS.
100
Curves of Rat and Human Plague.-July 31st, 1903, to August 4th, 1904.
KOWLOON DISTRICT VII. KOWLOON CITY..
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
96
92
88
84
80
76
72
68
64
60
Percentage of
56
Infected
52
Rats on Total
48
44
caught.
40
36
32
28
24
20
16
12
8
O3
Lrn
Number of
Plague Cases.
WEEKS.
4
2
0
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
0