a Hopital Pitié-Salpêtrière, Laboratoire d'Immunologie Cellulaire, Paris, France , b Faculté de Medecine Saint-Antoine, INSERM SC4, Paris, France , c Hopital Pitié-Salpêtrière, Laboratoire de Virologie, Paris, France Background: HIV-1-specific T helper-1 cell responses have been associated with long-term-non-progression (LT-NP) in HIV infection but the correlation between frequencies of HIV-1-p24-specific Th1 cells and viral load has not yet been studied.