was introduced in the uk in 2008, when girls aged between 11 and 13 were first offered the jab. and since september 2019, boys of the same age have also been eligible. now, the first real world study of the vaccine shows it's had a dramatic effect. cervical cancer rates were 87% lower in girls who were offered the vaccine when aged 12 and 13. it's estimated that by mid—2019, the hpvjab programme had prevented around a50 cervical cancers, and around 17,200 precancers, all of which would have needed some medical intervention. this study looked at people who both had the vaccine for hpv and were screened by cervical cancer. so cervical screening still remains important. as the vaccine gets taken up, more and more people are vaccinated, we might see changes to what the screening programme looks like. so that might be how often you go in, or what the test looks like.