Under Streek's direction the Institute for HIV Research works on several prevention methods against HIV including the development and feasibility of HIV vaccines as well as pre-exposure prophylaxis. A particular focus for HIV vaccine development is to understand how T follicular helper (Tfh) cells can drive protective antibody responses during the germinal center reaction. Further research areas of the institute include understanding why some co-morbidities, such as cancer or cardiovascular diseases, are more prone to develop in chronic HIV infection and whether strategies can be developed to suppress HIV viral loads in the absence of antiretroviral therapy. Some of these studies are being performed in Maputo, Mozambique, where he leads a PhD sandwich program with the Instituto Nacionale de Saude to train and retain young physician scientists.
