The most common way to contract chlamydia is by having vaginal, anal or oral sex with someone who has chlamydia, according to the Centers for Disease Control and Prevention. The best way to avoid contracting chlamydia is abstaining completely from vaginal, anal or oral sex.
Those who are sexually active can lower their risk of contracting chlamydia by using condoms every time they have sex and making sure that all partners have been tested for sexually transmitted infections recently. The most common symptoms of chlamydia infection for women are abnormal vaginal discharge and a burning sensation while peeing, notes the CDC. The most common symptoms of chlamydia in men are penile discharge, a burning sensation while peeing and testicular pain.