JABS tested in Manchester which protect against cervical cancer should be given to all girls aged 12-13, a government health watchdog says.

The Joint Committee on Vaccination and Immunisation has recommended the vaccines to protect against the sexually transmitted infection human papillomavirus, which can lead to cervical cancer.

The Department of Health has agreed `in principle' to accept the advice that the vaccines, tested at St Mary's Hospital, Manchester, should be given to girls aged 12-13.

It said routine vaccination of girls could start in autumn 2008.

But some critics have argued that vaccinating against HPV might encourage sexual promiscuity.

Public Health Minister Caroline Flint said: "Cervical cancer is the second most common cancer of women worldwide.

"In the UK alone, the lifetime risk of developing cervical cancer is one in 116. The benefits of introducing this vaccine will be felt by women and their families for generations to come."

The virus causes 99 per cent of invasive cervical cancer and the new jab would protect against the viruses responsible for about 70 per cent of cases.

About 80 per cent of sexually active women can expect to have an HPV infection at some point in their lives.

Boys could also be vaccinated in the hope of eventually eradicating HPV.