Estimating the Force of Infection with Helicobacter pylori in Japan

Figure 2

Comparison between observed and predicted seroprevalence against Helicobacter pylori in Japan by birth year. Observed data (filled marks) in various surveys are plotted by birth year and compared against model prediction (unfilled marks) that assumes time dependence in the force of infection with an exponential decay. Predictions were made as a function of survey year and age.