L.L.
N.:
I can appreciate your concern, we never want to hear anything was less than it was supposed to be when it comes to our children. However, unless things have changed when I worked for a Pediatrician... the "liquid" was most likely saline (water)which we use to mix with the powder to create the HIB injection. The powder actually is the treatment and again unless this has changed but I'm doubtful it has. I can say in over 15 years of working with all types of physicians, the Pediatricians were by far the most on top of things. You Pediatrician certainly would have advised you if there were any health concerns and it seems there aren't. Even if the new injections are not a mix of saline the main medication is the powder so you baby should be fine getting his next shot. The medical assistant probably went to prepare the mix and got distracted. She gave your baby the injection and the opened powder was discovered later and how they found out which tells me the doctor runs a tight ship! Because if he didn't have a tight control over the process although not perfect, he and you would have never known of the error which would have left your child under protected which would have been worse if you think about it. Unfortunately, errors happen but it sounds like this one will not have an adverse effect on your baby... best wishes!
L.