Date: 09/04/2010
A study of 2,500 students found that annual screening is not enough to prevent cases of pelvic inflammatory disease, which can cause infertility.
In those who were found to have chlamydia, treatment cut the risk of pelvic disease by 80%.
The National Chlamydia Screening Programme backed the findings.
The researchers from St George's, University of London, concluded that most cases of pelvic inflammatory disease were in women who did not have chlamydia when they were tested a year earlier.
Read the full article The BBC online .
Watch our video