Our infant did not receive the hepatitis b vaccine at birth - is it okay to give the first dose with all the other vaccines at 2 months? or is it worth spacing it out? is there any benefit to spacing vaccines out vs. all at once?

I find the infants just as mad/pissed with one shot as 3-4 & their recovery from each session the same. Studies cite an infant challenges their immune system dozens of times daily from the germs they suck off their fingers, much more than the few shots they may get with the recommended pattern. I give shots at the same session when possible. I encourage parents who want different to go elsewhere.

Do what is convenient. Giving more than one shot at a time will not overwhelm the child's immune system.

The vaccines may be given on the same day or spaced within the month There are usually mild side effects with each vaccine and many parents do opt to space them, while others prefer the same day.