Patient's question:
Female, 30 years old, got the cervical cancer vaccine with friends. She is not very familiar with this vaccine, so she wants to ask if delaying the HPV vaccine by one week is still effective.Doctor's answer:
The quadrivalent and nonavalent cervical cancer vaccines require 3 doses. The 3-dose schedule is "0-2-6," meaning it takes six months to complete. The first dose has already started; the second dose is given two months later, and the third dose is administered at six months. For the second and third doses, it is not necessary to be exactly on the day; a delay of up to one week will not affect the efficacy. It is recommended not to delay the vaccination by less than two weeks. A delay of more than two weeks may slightly reduce the effectiveness, though there is no official precise data on the extent of the reduction. Therefore, it is best to follow the official guidance for vaccination. Delaying the vaccination for too long will definitely impact its effectiveness.