6 months + (yearly)
2 years
6-9 years
10+ years
If local outbreak; absent or damaged spleen; complement deficiency
11-12 years
15 years
If started at 15 years; 3 doses-2nd shot; 2 months after first shot; 3 doses-3rd shot; 6 months after first shot
16 years
16-18 years
ask us about frequency