An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Chlamydia is a sexually transmitted infectious disease caused by the bacterium Chlamydia trachomatis. In the United States, it is the most commonly reported bacterial infection. Globally, it is the most common sexually transmitted diseases. It causes an ocular infection called "trachoma," which is the leading infectious cause of blindness worldwide. In females, infertility and ectopic risks increase with Chlamydia trachomatis infections, leading to high medical costs. Lymphogranuloma venereum (LGV), caused by distinct serovars of Chlamydia trachomatis, is a less common disease characterized by enlarged lymph nodes or severe proctocolitis.
Hao S, Tao G, Pearson WS, Rochlin I, Phillips RL, Rehkopf DH, Kamdar N. Treatment of Chlamydia and Gonorrhea in Primary Care and Its Patient-Level Variation: An American Family Cohort Study. Ann Fam Med. 2025 Mar 24;23(2):136-144.
-
PMC
-
PubMed
Zhao P, Liang P, Wang J, Xu W, Huang S, Wang C. Chlamydia cases in women of reproductive age, 2006-2020: an analysis of surveillance data from Southern China. BMC Public Health. 2025 Jan 15;25(1):158.
-
PMC
-
PubMed
Habtamu E, Harding-Esch EM, Greenland K, Wamyil-Mshelia T, Talero SL, Mishra SK, Lietman TM, Solomon AW, Burton MJ. Trachoma. Lancet. 2025 May 24;405(10492):1865-1878.
-
PMC
-
PubMed
Owusu-Edusei K, Chesson HW, Gift TL, Tao G, Mahajan R, Ocfemia MC, Kent CK. The estimated direct medical cost of selected sexually transmitted infections in the United States, 2008. Sex Transm Dis. 2013 Mar;40(3):197-201.
-
PubMed
