[HIV infection/AIDS]. 
HIV infection is known as one of sexually transmitted infection and number of new HIV-infected patients is increasing in Japan.  It' s still difficult to detect HIV-infected career because HIV career has no symptoms for several years after HIV infection.  HIV treatment is progressing and made HIV-infection controllable disease, although HIV can not be eradicated from body.  This therapy is needed life-long continuance because HIV can easily achieve mutation that decrease efficacy of antiretroviral drugs.  Thus, we should perform HIV screening test more actively to prevent the further spread of infection and if detected, must educate importance of adherence of therapy.