| soil-transmitted helminths and haemoglobin status among afghan children in world food programme assisted schools. | in recent years there have been major socio-economic changes within afghanistan such that the present public health burden of soil-transmitted helminths (sth), especially that within school-aged children, remains to be determined. a baseline parasitological survey was therefore carried out in four defined areas of afghanistan to better assess the distribution, prevalence and intensity of sth infections prior to a nationwide de-worming campaign beginning within world food programme assisted schoo ... | 2005 | 16336723 |