Whoa, go for a quick lunch come back so many posts...hehe.
Re: MMR jab
Yes, as per what wendyg said, need to introduce both yolk and whites to test for allergy before MMR jab becos it contains eggs. My PD ks, ask me to introduce chicken too..haha. Actually MMR is not complusory (I also thought so), only measles and something else is but it's almost impossible to find the individual vacines as the combined MMR is more commonly used now.
Re: Fresh Milk
Below 2 years old full cream is better plus they will not be drinking so much since solid food intake will increase. Also good to increase calcium intake through cheese, yogurt, etc.
Jess,
Then where did your boy go for his 5-in-1 or 6-in-1?? Polyclinic? Why not call them to ask for information on MMR and the suspected egg allergy? And like what wendyg said, better to find a PD near your place.