Reduction was observed in the most common cervical cancer in women under 35 in England where around 2000 to 2500 women are diagnosed with cervical cancer each year. A study conducted by Public Health England and presented today at the Society for General Microbiology's Annual Conference shows a reduction in these two HR HPV types - which are included in the HPV vaccines used - in sexually active young women in England.
Between 2010 and 2012, over 4000 samples were collected from young women receiving a chlamydia screen as part of the National Chlamydia Screening Programme in England. Prior to the HPV immunisation programme introduction, a survey showed around 1 in 5 sexually active women aged 16 to 18 were infected with at least one of the two HPV types included in vaccines. A similar survey conducted following the introduction of the programme showed the prevalence had dropped to 1 in 15 young women.
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Post-immunisation prevalence of HPV types 16 and 18 infection was lowest among women aged 16 to 18 year old, the age group with the highest vaccination coverage. Prior to the immunisation programme, this age group was shown to have the highest prevalence of infection.
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"The data provide reassurance that the high efficacy against HPV infection in women reported in clinical trials can be effectively realised in practice, and in a programme achieving high coverage amongst young females. These data adds to our confidence that the HPV immunisation programme will achieve its aim of reducing cervical cancer."
Source: Eurekalert
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