Every leprosy sanatorium in Japan has churches and Buddhist temples (except Okinawa w/ no temple). During their forced quarantine from society, some patients decided on religion to prepare for their death.
Interesting how leprosy is interpreted as a punishment in Buddhism & early Christians but during the Middle Ages in Europe, lepers gained partial favoritism from Christians because Jesus' interaction with lepers led to viewing the lepers as "chosen by God" or seeing the disease as a means of obtaining access to heaven.