The effect of only one injection will not be too obvious, because the failure to complete a continuous immune response will lead to a lower concentration of antibodies in the body, and the effect of preventing HPV will be less effective than the case of three full injections. Nine price need three consecutive injections, generally two months after the first injection of the second injection, after the second injection of about six months injection of the third injection, after the injection of the three injections to ensure that there are enough antibodies in the body, the first two injections of the role is to produce a large number of antibodies, the third injection of the role of the role is to strengthen the body’s immune system, the three injections of the end of the amount of antibodies produced will be enough to have a high potency, when the body of HPV infection, the body’s ability to defend itself will be stronger. When the human body is infected with HPV, the body’s defense ability will be stronger. If you can’t do the last two injections due to special circumstances, you need to communicate with your doctor in time to clarify the pros and cons.