Its statement on the decision said: Health campaigners argue both sexes deserve equal protection against HPV through vaccination file photo 'While there are some additional population level health benefits to both males and females by extending the programme to boys, impact and cost-effectiveness modelling indicates that adding boys is highly unlikely to be cost-effective in the UK.
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Jonathan Ball, professor of molecular virology at the University of Nottingham, has previously said: The human papilloma virus HPV is the name given to a family of viruses.
There are over different types of HPV, with around 40 types that affect the genital area. Different types of HPV are classed as either high risk or low risk, depending on the conditions they can cause.
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For instance, some types of HPV can cause warts or verrucas. Other types are associated with cervical cancer. In 99 per cent of cases, cervical cancer occurs as a result of a history of infection with high-risk types of HPV.
Often, infection with the HPV causes no symptoms. Infection with some high-risk types of HPV can cause abnormal tissue growth as well as other cell changes that can lead to cervical cancer.
Infection with other types of HPV may cause genital warts, skin warts and verrucas, vaginal cancer or vulval cancer although these types of cancer are rareanal cancer or cancer of the penis, some cancers of the head and neck and laryngeal papillomas warts on the voice box or vocal cords.
Studies have already shown that the vaccine protects against HPV infection for around 10 years, although experts expect protection to be for much longer.
In April pharmacy chain Boots UK launched a new private vaccination service from the age of 12 to But campaigners argue that a free NHS programme will encourage the best uptake, A recent survey carried out by HPV Action of over 1, British GPs and dentists revealed that 95 per cent believe the national HPV vaccination programme should cover both boys and girls.
TV presenter Dr Christian Jessen backs the calls and said it is important to give the jab to boys when they are 12 or 13 — before they are sexually active.
Share or comment on this article: Only girls are vaccinated on the grounds that men who only have sex with women would logically also be protected from transmission.