u/antiundead

Online information says 0/1/6 months for the 3 dose schedule for Engerix B. I know that this is the minimum timing as the body needs to build up a specific threshold of antibodies for the full immunity to work. But what is the maximum timing between doses?

I understand the 2nd shot at 1month means 1 month minimum, so would 3 months between the first and 2nd dose still be viable? At what level do the antibiotics fade without new stimulus from a 2nd or 3rd dose?

This is the only info I could find myself on this topic but it wasn't very informative: https://www.hepb.org/what-is-hepatitis-b/faqs/if-i-started-the-vaccine-series-but-didnt-complete-my-2nd-or-3rd-dose-on-schedule-do-i-have-to-start-over/