ABSTRACT Hepatitis B virus has been a problem in developing countries. The transmission of HBV is through the exposure to the blood or secret ofthe infected patients. Woman has 3 times higher risk to get HBV than men. The pleminary observation revealed that in Pondok Pesantren Putri QoyyimYogyakarta 20-30 students shared a room. It also showed poor hygene that might lead to environmental based…