If I received my 1st dose of hepatitis vaccine in 12-06, and the 2nd dose in 11-07, when should I get the 3rd?

Answer 1

at this point it really doesn't matter...the correct vaccination series is the original shot, another at one month, and the third at six months. Frankly, I'd just do the entire series over. Correct dosing is needed for adequate immunity. You can have a titer drawn and tested to see if you have garnered any immunity from what you have done so far, but I doubt you will have benefitted. Plan on doing the series over and doing it right this time.