Here's a link to the medical why's:
Here's a copied portion from the above link on why it changed from the target group of at risk (or high) to universal:
The alternative to universal immunization and giving the hepatitis B vaccine to all newborns would be to simply target high risk newborns and other people who are at high risk for getting hepatitis B infections. Unfortunately, health experts tried that when the hepatitis B vaccine first came out and it didn't work.
But then, in theory, it doesn't matter what happens to MY child, just so long as my child doesn't spread it to YOUR child, right?
So they're vaccinating my child to make sure your child is safe down the line when they start bumpin' uglies in the back of Mommy's station wagon.
Or sharing needles - you know we have to protect everyone for their own good from their own choices.. ;-)
Hib is given at two months.
I don't know how old your children are, but you can find the past schedules close to the bottom of the page (link below). Hib is one of the newer vaccines but its been around a while.
The vaccine (like all vaccines) is not proven to work on all individuals. IOW's - there are no studies proving efficacy of the vaccine. (Positive antigen is not the same as immunity.) There are media pieces like this that tell the truth of the matter:
From what I understand, the Hep B is given in the hospital in all fifty states. Parents are often given the choice between doing it while in the hospital, or they can make an appointment to see the doctor immediately after checking out of the hospital and get the vaccine then.
This is a disease that a newborn baby is extremely unlikely to catch. Either the Mom has it (they test to see if you do), or a prostitute/drug addict or other individual with Hep B could spit in the baby's mouth - they could get it that way. Or if your baby shares needles or has sex, he/she could also get it. By the time your newborn is old enough to participate in sex or needles, the vaccine has most likely waned. They added boosters but they still haven't proven the vaccine to be effective.
i got all my vaccines and im a healthy, happy, college educated, functioning member of society and so is everyone else i know.
everything injected into my son was dead. i have no fear of zombie viruses. but i guess i probably only believe that because im "uninformed" right?
again, vaccinating is not unfit parenting.