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***<br />

THE DISEASES − CHAPTER 4<br />

163<br />

Burden and distribution<br />

WHO estimates that about 875 million children require annual treatment with preventive<br />

chemotherapy (4). Fig. 4.15.1 shows the global distribution of soil-transmitted helminthiases<br />

and the proportion of all children needing regular preventive chemotherapy. Fig. 4.15.2 shows<br />

the number of preschool-age children treated during 2008–2012.<br />

Fig. 4.15.1 Distribution of soil-transmitted helminthiases and proportion of children (aged 1–14 years) in each<br />

endemic country requiring preventive chemotherapy for the diseases, worldwide, 2012<br />

Proportion of children (aged 1–14 years) in each endemic country requiring<br />

preventive chemotherapy for soil-transmitted helminthiases<br />

> 2/3<br />

1/3 2/3<br />

< 1/3<br />

No data available<br />

Not required<br />

Not applicable

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