Yearly Chlamydia Screening May Be Ineffective for Some

FRIDAY, April 9 (HealthDay News) -- Once-a-year screening for chlamydia isn't likely to protect women from developing pelvic inflammatory disease, researchers say.
A new study has found that most cases of pelvic inflammatory disease occur in women who didn't have chlamydia infection when they were screened, which suggests they may have become infected later.
Chlamydia is the most common sexually transmitted infection in Europe and the United States. An estimated 3 million new infections are diagnosed annually, and because there are often no symptoms, many cases remain undiagnosed, according to background information provided in a news release about the study. Undiagnosed chlamydia infection may lead to pelvic inflammatory disease.

http://news.yahoo.com/s/hsn/20100410/hl_hsn/yearlychlamydiascreeningmaybeineffectiveforsome;_ylt=ApmUZ_hncch.KzDgwKcC4UnVJRIF;_ylu=X3oDMTNtcG84N21wBGFzc2V0A2hzbi8yMDEwMDQxMC95ZWFybHljaGxhbXlkaWFzY3JlZW5pbmdtYXliZWluZWZmZWN0aXZlZm9yc29tZQRwb3MDMTEEc2VjA3luX2FydGljbGVfc3VtbWFyeV9saXN0BHNsawN5ZWFybHljaGxhbXk-