Bulletin of the World Health Organization

Two-year impact of single praziquantel treatment on infection in the national control programme on schistosomiasis in Burkina Faso

Seydou Touré, Yaobi Zhang, Elisa Bosqué-Oliva, Césaire Ky, Amado Ouedraogo, Artemis Koukounari, Albis F Gabrielli, Bertrand Sellin, Joanne P Webster, Alan Fenwick

Volume 86, Number 10, October 2008, 780-787

Table 2. Cross-sectional analysis of Schistosoma haematobium infection in the 7–14-year-old schoolchildren before and after treatment

Variable Baseline(95% CI) 2 years post-treatment(95% CI) Overall reduction in %
Prevalence in %
Overall prevalence 55.8 (53.4–58.2) 12.6 (10.2–15.0) 77.4
(n = 1644) (n = 761)
By region
Boucle du Mouhoun 58.6 (53.8–63.3) 15.8 (11.7–20.0) 73.0
(n = 413) (n = 297)
Nord 61.2 (56.5–65.8) 2.0 (0.0–4.8) 96.7
(n = 417) (n = 99)
Sahel 84.2 (80.7–87.7) 30.0 (21.8–38.2) 64.4
(n = 412) (n = 120)
Sud Ouest 18.4 (14.6–22.2) 4.5 (1.9–7.1) 75.5
(n = 402) (n = 245)
By sex
Boys 59.8 (56.7–63.0) 16.5 (12.9–20.1) 72.4
(n = 936) (n = 406)
Girls 50.6 (46.9–54.2) 8.2 (5.3–11.0) 83.8
(n = 708) (n = 355)

Intensity of infection in e/10 ml
Overall mean 91.3 (80.0–102.7) 18.0 (9.4–26.6) 80.3
(n = 355) (n = 761)
By region
Boucle du Mouhoun 106.7 (86.0–127.5) 37.4 (16.9–58.0) 64.9
(n = 413) (n = 297)
Nord 91.0 (67.3–114.6) 0.1 (0.0–0.2) 99.9
(n = 417) (n = 99)
Sahel 126.9 (99.3–154.4) 14.5 (0.0–31.2) 88.6
(n = 412) (n = 120)
Sud Ouest 39.4 (22.8–56.1) 3.4 (0.0–7.3) 91.4
(n = 402) (n = 245)
By sex
Boys 111.8 (95.6–128.1) 26.8 (12.3–41.3) 76.0
(n = 936) (n = 406)
Girls 64.2 (49.1–79.3) 7.9 (0.0–15.8) 87.7
(n = 708) (n = 355)

CI, confidence interval; e/10 ml, number of eggs per 10 ml urine; n, sample size in the group.

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