| skin test study of bancroftian filariasis in kuroshima island, okinawa: a 13-year longitudinal study during a control campaign. | a longitudinal study was performed in an island, endemic for bancroftian filariasis, by blood survey and skin test from the beginning of a filariasis control campaign in 1967 through 1980. the initial microfilarial rate of 13.2% was successfully reduced to almost 0 by 1970, by the selective administration of diethylcarbamazine to microfilaria positives. the age distribution of skin-test positivity changed year by year, especially in the younger age groups. a marked reduction was seen in the posi ... | 1982 | 6751115 |