Human Papilloma Virus (HPV) can be associated with cervical cancer
HPV is sexually transmitted, though is not thought to affect men, who are carriers of the virus
HPV viruses living in cells can be the trigger for cervical cancer in women
Girls aged 12-13 are injected with a vaccine for HPV
Before they reach the age of sexual activity
Vaccination triggers an immune response
Which reduces the risk of viruses spreading in a subsequent infection
So in turn, the risk of cervical cancer in those girls/women is reduced