I had a terrible reaction to the pertussis vaccine as a child (super high fever, swelling), so I cannot get it again. Will I still be able to enter the field of nursing? Many programs state you have to have a pertussis booster, but I am wondering if some would accept a titer. Does anyone have experience with this. PS. I also really want to reiterate the reason I don't want to get a pertussis booster is because I CAN'T, not because I don't want to. I'm totally pro-vaccine and I'm happy to get any other vaccinations I need.