Chlamydia is a prevalent sexually transmitted infection that often has no symptoms. It can cause pelvic inflammatory disease and lead to infertility by damaging fallopian tubes. Studies found chlamydia infection in 15-28% of women tested in India, with higher rates in infertile women. Screening and treatment is recommended to prevent complications and further transmission. While the risk of infertility from chlamydia is low, ongoing research aims to better understand disease progression and develop a protective vaccine.