Vaccines are very safe, and the reason so many people think there is a risk goes back to a doctor called Andrew Wakefield who was struck off in 2010 when the GMC found that he had been dishonest in his research, acted against his patients' best interests and mistreated children. I think he may have a personality disorder but my own personal feeling about MMR (measles mumps and rubella) vaccine is based on my own daughter being born with congenital rubella. There was no vaccine when I was young, so I got symptomless rubella without knowing it when I was pregnant. At her birth we were told she could be some or all of: blind, deaf, with mental defects, permanent heart disease, and infertile when she grew up, and we had to get her checked all the time as a baby, then for the next 20 years. It was a nightmare. So please, don't risk spreading any disease to others by not getting vaccinated - even if you don't care if you, yourself, live or die.