| seroepidemiological study of helicobacter pylori infection in south african children. | the seroepidemiology of helicobacter pylori infection was studied in 681 randomly selected black children from newborn to 13 years of age (333 boys, mean age 8.05 years, and 348 girls, mean age 7.76 years) in kwazulu/natal, south africa. h. pylori infection was identified serologically using an enzyme-linked immunosorbent assay to detect the presence of immunoglobulin g against h. pylori. demographic information collected included age, gender, family income, overcrowding, educational level, and ... | 1997 | 9373630 |