Human papillomavirus, or HPV. HPV vaccines mainly include 2-valent, 4-valent, and 9-valent, each with different intervals.
1.2-valent HPV vaccine: generally requires an interval of 1~2.5 months after the first HPV vaccine before the second HPV vaccine, and an interval of 5~12 months between the third and the first vaccine.
2. 4-valent HPV vaccine: Generally, it is required to receive the 2nd HPV vaccine at an interval of about one month after the 1st HPV vaccine, while there should be an interval of 3 months between the 3rd and 2nd vaccine and the 3rd vaccine should be completed as far as possible within 1 year.
3. 9-valent HPV vaccine: It is required that the interval between the 1st and 2nd HPV vaccine should be at least one month, and the interval between the 2nd and 3rd vaccine should be at least three months, and the 3rd vaccine should be completed within one year as far as possible.
If there is some special health condition that prevents you from receiving the vaccine before the vaccination, you need to inform your physician and postpone the vaccination to a later date. It is recommended to consult a medical professional for details.