question: Hi doctor, Recently, I had a blood test for MMR (measles, mumps, rubella) and the report that I got, am not able to interpret. Could you please see if the report is fine? Will I require a vaccination dose for the same (I had the vaccination in childhood)? Is it harmful to have the vaccination more than once? I had a rheumatic heart surgery four years ago (aortic valve replacement). Currently, I am on Betaloc 12.5 mg, Ecosprin 75 mg, and Warfarin 5 mg.