Seems like I remember it being two or three weeks between doses. It also takes a couple weeks for the final dose to kick in. I wouldn't imagine it being a problem if people are still responsible between doses and immediately after but I'm not sure how much education the general public has sought out. I'm sure they are informed of all of this when they receive the first dose.Have they said how long it takes to have to get both doses inbetween the first dose and the second dose? It seems like a "first dose" delay is already screwing things up nevermind having to get another dose on top of that.