| biomedical survey in north samar province, philippine islands. | a biomedical survey was carried out in north samar province, philipines to update information on the prevalence of parasitic and other infectious diseases. a total of 1,394 stool specimens, 1,859 blood smears and 1,274 sera were collected from persons living in 8 barrios. stools were examined for intestinal parasites, bloods smears for malaria and filariasis and sera tested for antibodies to schistosoma japonicum, entamoeba histolytica, toxoplasma gondii, influenza a and b, and japanese encephal ... | 1977 | 614707 |
| child growth and schistosomiasis japonica in northeastern leyte, the philippines: cross-sectional results. | the association between schistosomiasis japonica and child growth was studied cross-sectionally in 1,561 males and females aged 4-19.9 years residing in an endemic region of northeastern leyte, the philippines. stature, weight, upper arm muscle area, and sum of triceps and subscapular skinfold thicknesses were measured and related to presence of schistosoma japonicum eggs in kato stool smears and to the intensity of infection assessed by quantitative egg count. the presence of hookworm, ascaris, ... | 1992 | 1599051 |
| schistosomiasis japonica and childhood nutritional status in northeastern leyte, the philippines: a randomized trial of praziquantel versus placebo. | the hypothesis that infection with schistosoma japonicum causes decreased nutritional status was studied in a randomized trial among 170 males and females, mean (sd) age 11.4 (3.5) years, residing in an endemic region of northeastern leyte, philippines. the s. japonicum-infected children were randomized to receive praziquantel or placebo and followed-up six months after randomization. stature, weight, triceps, subscapular, and calf skinfold thicknesses and their sum, and hemoglobin level were me ... | 1996 | 8644905 |
| schistosoma japonicum and occult blood loss in endemic villages in leyte, the philippines. | schistosoma japonicum has been related to anemia, but the mechanisms mediating this relationship remain unresolved. the primary objective of this study was to assess the role of occult blood loss in mediating s. japonicum-associated anemia after adjusting for age, sex, socioeconomic status (ses), and other helminth infections. the secondary objective was to identify intensity categories of risk for occult blood loss for trichuris and hookworm after adjustment for the presence of other helminth i ... | 2005 | 15741543 |
| helminth infection and cognitive impairment among filipino children. | the objective of this study was to examine the independent effect of infection with each of four helminths (ascaris lumbricoides, schistosoma japonicum, necator americanus, and trichuris trichiura) on cognitive function after adjusting for the potential confounders nutritional status, socioeconomic status (ses), hemoglobin, sex, and the presence of other helminthes. this cross-sectional study was carried out in a rural village in leyte, the philippines in 319 children 7-18 years old. three stool ... | 2005 | 15891127 |
| estimating the sensitivity and specificity of kato-katz stool examination technique for detection of hookworms, ascaris lumbricoides and trichuris trichiura infections in humans in the absence of a 'gold standard'. | the accuracy of the kato-katz technique in identifying individuals with soil-transmitted helminth (sth) infections is limited by day-to-day variation in helminth egg excretion, confusion with other parasites and the laboratory technicians' experience. we aimed to estimate the sensitivity and specificity of the kato-katz technique to detect infection with ascaris lumbricoides, hookworm and trichuris trichiura using a bayesian approach in the absence of a 'gold standard'. data were obtained from a ... | 2010 | 19772859 |
| assessing the impact of misclassification error on an epidemiological association between two helminthic infections. | polyparasitism can lead to severe disability in endemic populations. yet, the association between soil-transmitted helminth (sth) and the cumulative incidence of schistosoma japonicum infection has not been described. the aim of this work was to quantify the effect of misclassification error, which occurs when less than 100% accurate tests are used, in sth and s. japonicum infection status on the estimation of this association. | 2011 | 21468317 |