New episodes of genital chlamydia (uncomplicated): by sex
The incidence of sexually transmitted disease has been rising in England, Wales and Northern Ireland in recent years, particularly among young people.
Chlamydia is the most common sexually transmitted infection. Between 2003 and 2004 there was a 8 per cent rise in the number of cases of Chlamydia diagnosed at genito-urinary clinics - a rise of 12 per cent in men and 6 per cent in women.
The number of cases has risen steadily since the mid 1990s and more than tripled from 30,794 cases diagnosed in 1995 to 97,250 in 2004.
The highest rates are seen in young women aged 16 to 19 and 20 to 24 (1,350 per 100,000 and 1169 per 100,000 respectively)) and men aged 20 to 24 (1036 per 100,000). In 2003, within England, rates in both males and females were highest in London, but were also high in Yorkshire and Humberside and the North West.
In 2003 the second most common bacterial sexually transmitted infection was uncomplicated gonorrhoea. There were 21582 infections diagnosed in genito-urinary clinics in 2004, an 11 per cent decrease from 2003. The highest rates are seen in men aged 20 to 24 (240 per 100,000) and women aged 16 to 19 (179 per 100,000). The highest rates of gonorrhoea infection were found in London for both men and women.