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 4. Schistosoma mansoni prevalence and intensity of infection in the longitudinal cohort children before and after treatmenta

Variable Baseline(95% CI) 1 year post-treatment(95% CI) 2 years post-treatment(95% CI)
Prevalence in %
Overall (n=322) 2.8 (1.0–4.6) 1.6 (0.2–2.9) 0.3 (0.0–0.9)
Sud Ouest (n=66) 13.6 (5.4–21.9) 7.6 (1.2–14.0) 1.5 (0.0–4.5)
Intensity of infection in epg
Overall (n=322) 4.6 (0.0–9.7) 7.0 (0.0–15.1) 0.6 (0.0–1.8)
Sud Ouest (n=66) 22.4 (0.0–47.3) 33.8 (0.0–73.7) 2.9 (0.0–8.7)

CI, confidence interval; epg, number of eggs per gram of faeces.a All data at 2 years post-treatment were significantly lower than at baseline (all P < 0.05). No significant difference was found between 1 year post-treatment and baseline or between 2 years and 1 year post-treatment (P > 0.05).

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