Prevalence of CagA, VacA antibodies in symptomatic and asymptomatic children with Helicobacter pylori infection.

Background: Limited data are available on the prevalence of CagA and VacA Helicobacter pylori antibodies in children. The aim of this study was to investigate the antibody prevalence to the H. pylori virulence factors CagA and VacA in symptomatic and asymptomatic children with H.