At what age should all sexually active women begin annual screening for chlamydia?

Annual screening for chlamydia is recommended to begin at age 26 for all sexually active women. This guideline is based on the understanding that younger women, particularly those under 26, are at a higher risk for chlamydia and other sexually transmitted infections (STIs). The earlier identification and treatment of chlamydia help prevent complications such as pelvic inflammatory disease, which can lead to infertility.

While some of the other age options may seem reasonable, they do not align with the recommendations confirmed by health authorities. For instance, beginning screening at 32 or 35 would miss a significant number of cases in that younger age group where the prevalence is higher. Starting at age 18 is less optimal, as the recommendation focuses specifically on those under 26, emphasizing the increased risk, but this age limit can be beneficial as it encompasses those in their late teens and early twenties who may be sexually active.