Chlamydia cases leap among under-16-year-olds - Times Online

"More than 2,000 15-year-olds were infected with chlamydia last year after having under-age, unsafe sex, part of a rising incidence of sexually transmitted infections (STIs) among children.

Detection rates for chlamydia have increased more than 40-fold since 2003 when a national screening programme was introduced, new figures show.

A total of 2,020 teenagers screened positive for the infection while below the age of consent in 2008, compared with 1,176 cases the previous year and just 52 in 2003."