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Chlamydia trachamatis, known simply as Chlamydia, is a common sexually transmitted infection caused by bacteria. Chlamydia affects mostly young men and women around the age of 25 but can be transmitted and contracted at any age, including passed from a pregnant mother to her newborn baby. Chlamydia is known as the "silent disease" because over 75% of males and over half of females never have symptoms. When symptoms are present they range from fever, pain and redness of the affected area, as well as uncommon discharge. Testing for Chlamydia is as simple as a swab of the affected area and urine test. While the infection does not prove fatal, it can have lasting affects if left untreated including infertility in both men and women, as well as blindness in newborns. Like all bacterial infections, treatment for Chlamydia is PO antibiotics including Azithromycin and Doxycycline.