Chlamydia trachomatis is the most common treatable sexually transmitted infection in New Zealand, with gonorrhoea a distant second. It can infect the endocervix, urethra, rectum, pharynx and eyes. It is most commonly diagnosed in sexually active youth and young adults <25 years old, with Maori and Pacific peoples having higher rates of infection than Europeans. This course provides information as well as recent clinicial and and patient resources.