I work in a very busy family practice clinic, and a big part of my job is doing pediatric immunizations. Many of our pediatric patients are now getting the H1N1 and seasonal flu vaccine in addition to the required immunizations due for their age. Unfortunately, this results in some of our pediatric patients getting up to 6 injections in one visit! I am experienced in doing pediatric injections, but sometimes I'm not sure where I can safely give some of the IM injections. I understand that the vastus lateralis is the preferred site, and I will normally give no more than 2 IM injections in one leg. Sometimes I get into a situation where I have 6 IM injections to give, and I'm not sure if the deltoid is OK to use, especially in children 6-12 months. I don't normally use the deltoid in children that young, since the muscle may not be as developed. What is the maximum number of IM injections (0.5 ml each) you can safely give in the vastus lateralis? Can the deltoid be used in a child 6-12 months? Thanks for all replies.