Relationship between Chlamydia Trachomatis infection, infertility, and serum 25-hydroxyvitamin D: a cross-sectional study from NHANES 2013-2016.

Background: Chlamydia trachomatis is a common sexually transmitted disease that is associated with considerable morbidity and harmful sequelae, including pelvic inflammatory disease and infertility. Strategies for prevention and treatment of infertility in women with C. trachomatis infection require further investigation.