One example: the evolution of S. pneumoniae resistance
in Belgium between 1985 and 2000
40
peniG
tetra
erythro
peni full R
35
30
25
Text Box: percentage
20
15
10
5
0
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
00
J. Verhaegen, Central Pneumoccci Reference Laboratory,  Louvain
FARM2147
2/11/2004