What happens after you're given the MMR vaccine?

Nothing Most Of Time. Nothing happens most of the times Sometimes swelling and redness at the site of injection Mild rash and bruise lke spots rarely two weeks after vaccine in 1 n 24000 cases.It gets better without any treatment Other side effects are allergic reaction and rarely mild case of mumps like swelling.
Protection !! Your immune system develops antibodies to measles, mumps and rubella, protecting you and your loved ones from these diseases.