Many studies have shown that young adults are more likely to have unsafe sex and that they often lack the skills and confidence to negotiate safer methods.
The peak age for a sexually transmitted infection is 19-20 for women and 20-23 for men.
About 10 percent of the 15 to 24-year-olds treated for a sexually transmitted infection will be re-infected within a year.
"The numbers we're seeing in teenagers are of particular concern as this suggests they are repeatedly putting their own, as well as others', long-term health at risk from STIs," the Guardian quoted Hughes as saying.
Marie Stopes International, a sexual health NGO, said the figures were extremely concerning.
"We fear that STI rates may continue to rise, particularly among young people, without increasing access to comprehensive sex and relationships education in all British schools," said Helen Jenkins, contraception and sexual health specialist.
"Many teachers tell us that they don't have the confidence or information to teach sex and relationships education effectively, despite knowing that many of their students are sexually active," she stated.
HPA advises that everyone should use a condom with any new sexual partner and visit a sexual health clinic after unsafe sex.
People should also be screened for chlamydia every year and whenever they get a new partner, and gay men should go for annual sexual health screening, including an HIV test.
Source-ANI