Table 3 Prevalence of HPV types prevented by the Gardasil HPV vaccine and hypothetical vaccine protection against prevalent infectionsa
| Â | American Indian | White | ||
|---|---|---|---|---|
| Â | (n= 235) | (n= 246) | ||
| Â | % | (95% CI) | % | (95% CI) |
Infected by HPV types prevented by Gardasil vaccine | Â | Â | Â | Â |
   Type 6 | 1 | (0-3) | 1 | (0-2) |
   Type 11 | 1 | (1-3) | 0 | -- |
   Type 16 | 5 | (3-8) | 6 | (3-10) |
   Type 18 | 5 | (3-10) | 1 | (1-3) |
Hypothetical protection a by Gardasil against prevalent HPV infection | Â | Â | Â | Â |
   Not applicable (no infection) | 58 | (51-65) | 77 | (71-82) |
   No protection | 32 | (26-38) | 15 | (11-21) |
   Partial protection | 5 | (3-8) | 2 | (1-4) |
   Full protection | 5 | (3-10) | 6 | (3-10) |