These guidelines are for health professionals in all regions of the NT. The prevalence of STIs varies greatly within the NT and this will affect the likelihood that a person who has had unprotected intercourse may have been exposed to an STI. Practitioners can seek advice from their local Centre for Disease Control (CDC) about the prevalence of STIs in their area. While these guidelines generally recommend a syndromic management approach, different approaches are appropriate for people or groups with different risk status. As a result, recommendations for treatment will vary. Some of the protocols in this publication suggest making a risk assessment, identify criteria to do so and recommend treatment accordingly