Sex Transm Dis 48 (9): e122-e123, 2021. doi: 10.1097/OLQ.0000000000001344 Screening Because chlamydial genital infection is so common and often asymptomatic or causes only mild or nonspecific symptoms (particularly in women), routine screening of asymptomatic people at high risk of STIs is recommended by the CDC (see the 2021 Sexually Transmitted Infections Treatment Guidelines: Screening Recommendations and Considerations Referenced in Treatment Guidelines and Original Sources: Chlamydia).