1) Seek medical assistance immediately if your child has any life threatening symptoms
2) Document everything. Take pictures of any visible rashes, swelling or bleeding. Save all paperwork from the vaccine visit. Attempt to get the lot number and brand name of the vaccine administered, along with the names of everyone involved.
3) Consider consulting with a vaccine lawyer if you suspect you need one or need individual information.
Related on the blog:
Will the pertussis vaccine protect your baby?
Custom vaccines for your child:
A list of pro/anti resources including CDC schedule, ingredients and inserts:
Growing up after a vaccine injury: