The theme of the conference was “No one left behind “and on Wednesday there were several presentations about how to identify and reach, high prevalence and under tested groups. Jeyamani Ramachandran talked about the under testing of psychiatric in-patients even though they are a high-risk group. Often, they have co-existing drug and alcohol issues which place them at risk from unsafe injecting and unsafe sex particularly when they are most unwell. They are often isolated, aboriginal and have prison experience. Although they are mentally unwell in hospital it is a time to test and initiate discussion about the need for treatment for blood borne viruses. In the sample tested 57% were hepatitis C RNA positive.