Question: how effective is the hpv vaccine?
Answer: How effective is the HPV vaccine? The vaccine (Gardasil 9) is highly effective. The HPV vaccine provides almost 100% protection from nine HPV types 6, 11, 16, 18, 31, 33, 45, 52 and 58), if all doses are received at the correct intervals, and if it is given before you have an infection with these types.