Figure 1. Sampling locations and participant recruitment across Northern Central America. This figure depicts the distribution and response rates of the subjects invited to participate in the study conducted in Northern Central America. In total, 1,143 participants were invited from various urban and rural centers within Guatemala and Honduras. The map highlights Guatemala with two urban centers and three rural centers, where 444 of the 461 subjects completed the serology tests. Similarly, in Honduras, all 699 invited subjects from three rural centers completed the tests. The shaded areas indicate the regions where the subjects were sampled, and the details provided within the insets specify the number of participants and completion rates of serological testing.
Figure 2. Prevalence of H. pylori, CagA, and VacA seropositivity by country (N = 1,143). This figure presents the prevalence rates of H. pylori serostatus and associated virulence factors among the populations sampled in Honduras and Guatemala. The bar chart compares the positive rates of H. pylori serostatus, active infection, and the presence of CagA and VacA virulence factors between the two countries as well as the total combined prevalence.
Figure 3. H. pylori and CagA seropositivity by age groups (N = 1,143). This figure illustrates the distribution of H. pylori and CagA seropositivity across different age groups among the 1,143 individuals sampled. The stacked bar chart shows the percentages of participants who were H. pylori-positive with and without CagA positivity (shown in darker and lighter shades of blue, respectively) and those who were H. pylori-negative (shown in green). Age groups were segmented as 18 - 30, 30 - 39, 40 - 49, 50 - 59, 60 - 69, and over 65 years (*Honduras participants only).