<s>[INST] Hi, I have taken a MMR Vaccine on march 15th 2011. Now I need to take MMR for Immigration paper work again. Can one take MMR vaccine twice with in a year? Is it safe? I am 29 years old. I am not pregnant and not planning in next few months. Please help. Thanks, Ashita. [/INST] Hi, The MMR vaccine is a safe and effective in protecting against measles, mumps and rubella. It is quite safe and there is no harm in getting another dose if you may already be immune to measles, mumps, or rubella. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr. Mohammed Taher Ali </s>