Background: The highest new case of leprosy in Indonesia was occupied by East Java Province for four consecutive years, with the number of new leprosy patients as many as 3880 in 2017. Purpose: This study aims to determine the characteristics of individual factors and risks factor for new leprosy cases. Methods: This research is observational analytic research with case control research design. The population of the case is new lepers that were diagnosed since January-September 2018. Meanwhile, the control population is skin poli patients who have not been diagnosed with leprosy and tuberculosis. Sampling technique used was simple random sampling. Variables studied were individual characteristics (age, gender, income) and individual risk factors including immunization status, contact history and population status. Results: Majority of the (57.90%) case respondents never received BCG immunization. 78.90% of the respondents case had history of contact with lepers before. 89.50% of respondents in cases and controls were permanent residents in Mojokerto Regency. Results of analysis of immunization status and contact history has significant influence to the new leprosy case. Status of not having BCG immunization (OR= 5.16; 95% CI= 1.23 <OR <21.55), p= 0.04) and history of having contact with lepers (OR= 6.43; 95% CI= 1, 52 <OR <27.24), p= 0.02) significantly affected new cases leprosy.  Conclusion: There is an influence between non-immunization status and history of contact with new leprosy cases. It is important to carry out early detection of individuals in contact with lepers, especially household contacts and recommendations for repeated BCG vaccination

Introduction: The prevalence of leprosy in 2017 in Indonesia shows 6.08 / 100,000 new cases of leprosy and 86.12% of which are multi-bacillary types. Determinants of leprosy events include the condition of residence. The aim of the study is to analyze the relationship between physical condition of house and sanitary facilities with the occurrence of leprosy. Methods: This study uses analytical observational research with a case-control study to analyze the relationship between the physical condition of the house and sanitary facilities and the incidence of leprosy in patients of Sumberglagah Hospital, Mojokerto. The sample size was 38, including 19 cases and 19 controls with simple random sampling. Research variables include individual characteristics, the physical conditions of the home, and sanitary facilities were analyzed using chi-square tests. Result : The results showed there was a significant relationship between physical conditions of house such as the ceiling, the type of floor, humidity, and density of the bedroom (p < α) with leprosy cases. Meanwhile, sanitary facilities do not show a significant relationship with leprosy cases. Conclusion: Efforts to prevent leprosy can be done through education to the public to maintain physical condition of the house according to prevailing requirements, especially the presence of ceilings, type of floor of the house made of materials that are easy to clean, comfortable humidity, and bedrooms not used by more than two people.