ABSTRACT
Seven villages in Central Sulawesi were surveyed in September 1971 and finger blood samples from 3,658 persons examined for microfilariae. Periodic, nocturnal Brugia malayi was endemic in all seven villages with microfilarial rates (Mf-rate) of 10-42% (av. 25%). The median microfilarial density (MfD50) averaged 5.4 and varied from 0.8 to 9.4 microfilariae per 20 microliter of blood. Males had higher Mf-rate and MfD50 value than females and in males Mf-rates and MfD50 values increased with age. In the female population, however, neither Mf-rates or MfD50 values varied significantly with age. Clinical manifestations of filariasis were found in 12% of 2,412 persons examined and only 2% had elephantiasis. Clinical signs of disease with the exception of elephantiasis, showed good correlations with Mf-rates but not with MfD50 values. Transmigrants experienced clinical manifestations of filariasis earlier and more often than the indigenous population.
Subject(s)
Adolescent , Adult , Aged , Brugia , Child , Child, Preschool , Elephantiasis/epidemiology , Female , Filariasis/epidemiology , Humans , Indonesia , Infant , Male , Middle Aged , Rural Health , Transients and MigrantsABSTRACT
A survey was undertaken in the Palu Valley, Central Sulasesi to determine whether schisto somiasis japonica was endemic in the area and to determine the prevalences rates of intestinal and blood parasites. Seven villages along the Palu River drainage system with an estimated popualtion of 18,700 were surveyed and 2,433 stools, 3,651 blood smears and 1,167 sera were collected and examined.
Subject(s)
Adolescent , Adult , Amoeba , Ancylostomatoidea , Antibodies/analysis , Ascaris , Child , Entamoeba , Entamoeba histolytica , Epidemiologic Methods , Feces/parasitology , Female , Giardia , Health Surveys , Humans , Indonesia , Infant , Male , Eukaryota , Middle Aged , Parasite Egg Count , Parasitic Diseases/epidemiology , Schistosoma , TrichurisABSTRACT
A blood survey for filariasis was carried out in the Kepu District of Jakarta. Examination of stained 20 c.mm finger-prick blood thick films and membrane filter concentration (MFC) of 1 ml venous blood. The youngest age group examined, 5-9 years old revealed a mf rate of 17% of which 71% were of a low density character detected by MFC only. The mf rate appears to remain relatively constant from the 10-14 year old group onward, approximately 35%, but at all age groups at least half the infections were of low density. The highest mf rate and density was observed present in the 15-20 year old group.
Subject(s)
Adolescent , Adult , Blood Specimen Collection/methods , Child , Child, Preschool , Female , Filariasis/blood , Filtration/methods , Health Surveys , Humans , Indonesia , Infant , Male , Membranes , Middle Aged , Wuchereria/isolation & purificationABSTRACT
A blood survey employing membrane filter concentration (MFC) and examination of stained 20 c.mm thick blood films as diagnostic methods was carried out in Banjar Regency of South Borneo, an area of endemic B. malayi filariasis. In untreated populations the mf rate, as revealed by MFC, ranged from 23.2% for the 5-9 year old group to 43.7% for the greater than 50 year old group. For all age groups approximately one half of the microfilaraemias were of a low grade nature, diagnosed by MFC only. In a population that had been subjected to mass DEC administration 1 1/2 years prior to this survey, the MFC-diagnosed rate was 15%. Approximately two thirds of these infections were of very low density, the average density being 2.2 mf/ml.