The NHS estimates one in every 10 cases of meningitis B is fatal. Survivors can be left with long-term problems including loss of vision.
Faye Burdett's parents spoke to Good Morning Britain about their heartbreak at losing their daughter.
Parents will tell MPs why they think the meningitis B vaccine should go to all British children up to the age of 11 later today.
Check if your child needs to get his or her Meningitis B vaccine.