The second or third injection of HPV vaccine can only be delayed and cannot be vaccinated in advance. Vaccination period of 9-valent HPV vaccine: 0, 2 and 6, that is to say, the interval between the second needle and the first needle is at least 2 months, and the interval between the third needle and the second needle is at least 4 months.
There is no upper limit on the interval between two doses of HPV vaccine, according to the US Centers for Disease Control and Prevention.
It can also be said that it is not mandatory to complete three stitches within half a year, and the time can be arranged flexibly. According to the product manual, three stitches can be finished in one year.
However, what if the inoculation time is obviously delayed for too long? For example, it has been more than half a year since many people were unable to take the remaining injections abroad because of the epidemic. What should we do?
The popular science website under the National Center for Immunology and Respiratory Diseases of the US Centers for Disease Control and Prevention explains the vaccination time of human papillomavirus:
If the vaccination time of HPV vaccine is obviously delayed, the official suggestion is that there is no need to re-vaccinate 3 shots, and the vaccination can be completed from the stop.
If you can't finish three shots in one year, it won't affect the vaccine effect.