TRACHOMA 285 TABLE 7--34. DISTRIBUTION OF HIGH-INTENSITY (H-1) TRACHOMA BY SELECTED ZONES FOR ALL AGES (NBS 1981) Estimated Population with H-1 Trachoma Percentage of All H-1 Trachoma in Nepal Estimated Prevalence per 100 Sample N Zone Mechi, Koshi, and Sagarmatha Janakpur, Bagmati, and Narayani Gandaki, Lumbini, and Dhaulagiri Rapti and Karnali Bheri Seti Mahakali Subtotal Missing trachoma intensity 9,703 5,196 0.2 4.2% 12,292 12,172 0.3 9.6 7,420 2,446 3,122 1,708 2,322 39,013 874 15,636 3,187 63,767 21,530 5,091 126,579 0.6 0.4 6.3 3.7 0.6 0.9 12.3 2.5 50.4 17.0 4.0 100.0 Total Source: FR7.010.1 AN.5 39,887 126,579 0.9 100.0 selected zones and regions used in Table 7-34. The overall preva- lence rate for Nepal is 2.2 high-intensity trachoma cases per 100 children ages 0-9. Bheri and Seti zones contain more than three- quarters (77.1%) of the estimated 86,704 high-intensity trachoma cases among children ages O to 9. These two zones contain an estimated 66,776 cases of high intensity trachoma among children ages 0-9, with prevalence rates of 15.8 cases (Bheri) and 8.8 cases (Seti) per 100 children. In other words, nearly 16 percent of the children ages 0-9 in Bheri zone have high-intensity trachoma, and nearly 9 percent of the children ages 0-9 in Seti zone have high- intensity trachoma. No other zone or region has remotely similar levels of high-intensity trachoma. As indicated in Figure 7.3, high-intensity trachoma is con- centrated in children under age 10. It is nonetheless informative to examine the distribution of high-intensity trachoma by age and sex, as displayed in Table 7-36. Females have more than half (56.2%) of the high-intensity trachoma, with a prevalence rate of 1.0 per 100 persons, compared to the rate for males of 0.8 per 100 persons. The prevalence rates decline with age for both sexes ranging from a high of 3.0 cases per 100 children ages 0-4 (males and females) to a low of 0.2 cases per 100 persons ages 30-49 (males). There is a
