A.T.
It is not available as a separate vaccine. They did this while all the controversy of autism was out and hot. They have since then stopped, as it is not proffitable to the drug companies I suppose. Some parents, test their children for any immunity issues as well as allergies, before agreeing to the vaccines, due to the autism controversy that stated that children with autism most likely had a compromised immune system or were allergic to begin with, that left them more succeptable. Give a read beow and you decide what you'd like to do.
http://www.vaccineinformation.org/measles/qandavax.asp