 [ Symptoms ] can young children age 2 get measles after having 1 mmr vaccine at 12 months of age  my daughter age 2 has a rash and fever the rash looks very similar to measles [ Disease ] many rashes look similar to measles but a vaccinated child at age 12 months should not be contracting measles unless there was a confirmed direct exposure measles is uncommon in the u s now but i do not know where you live have her examined by her medical provider and read a bit more about the signs and symptoms of measles on webmd a rash is not the only sign