To protect yourself from chlamydia abstain, be faithful to 1 partner you have tested with, or use condoms EVERY time you have sex. Chlamydia bacteria are passed between people in sexual fluids. Condoms are made of solid rubber-vaginal discharge and semen cannot pass through so condoms give VERY good protection from chlamydia and other Sexually Transmitted Infections(STIs), including HIV/AIDS. Condoms only work if used correctly.
Attribution: Straight Talk Foundation