Issue It is estimated that there are about 10,000 HIV-positive and undiagnosed people in Île-de-France (French region). They are composed of 70% men, 40% of whom are MSM and 40% of sub-Saharan African migrants. A bridging process has been designed by the Public Health association AREMEDIA and developed in partnership with Fernand-Widal Hospital’s testing center, to reach underserved populations. From March 2018, a screening test session for sexually transmitted infections (STIs) is taking place weekly in the hospital walls. This action is dedicated to the population of ARDHIS association, which accompanies more than 1,000 people each year, seeking asylum because of their sexual orientation or gender identity. Description of the problem Despite the promotion of this ’indoor’ targeted consultation via ARDHIS volunteers and directly to asylum seekers during occasional community events, the consultation only allowed the screening of 23 people in 4 months. It has been decided to carry out screening ’outside the hospitals walls’, where the people are, in order to promote the return of results, treatment, access to PrEP, HBV vaccination at the weekly indoor hospital consultation. “Community health relays” training together with the development of phone contact procedures were developed to facilitate the access to the indoor consultation. Results The methodology made it possible to double the average number of consultations over the following 5 months from 5 to 10 consultations per 3-hour slot, not counting PrEP appointments and vaccines, which averaged 6 per session. By the end of 2018, 261 people were screened, 23 had a PrEP treatment and many were vaccinated. As the scheme continues to develop, the results from January to July 2019 will be reported. Leçons To reach the most at risk populations, specific public health approaches are needed, taking account the context and representations of the target populations. Community involvement has proven to be effective. Key messages To fight HIV, innovative devices are needed to reach targeted populations. This has allowed hundreds of LGBTI asylum seekers to be screened and a significant number to receive preventive treatment.