factors influencing the epidemiology of helicobacter pylori infection in children. | the epidemiology of helicobacter pylori infection was studied in 245 healthy children (between 3 and 20 years of age) who presented for day surgery at arkansas children's hospital. h pylori infection was identified serologically using an enzyme-linked immunosorbent assay to detect the presence of igg against the high molecular weight, cell-associated antigens of h pylori. demographic information collected included age, gender, race, family income, type of housing, location of housing, water supp ... | 1991 | 1881740 |