2 year old got MMR shot 10 days ago started running fever today do you think it's from shot? Scares me from scary things I read on line

Common pattern. The MMR may trigger a benign fever elevation an average of 7-10 days after the shot.It marks a positive body response to the vaccine and verifies the body did actually recognize the stimulus. Probably 1/10-1/20 experience this simple reaction. Much of the internet info describes fraudulent research by Dr Wakefield that has been proven a fraud & lead to loss of his medical license.