Alex Masi

Women with their children are sitting on the floor of the MÈdecins Sans FrontiËres (MSF - Doctors Without Borders) clinic in Anka, Zamfara State, Nigeria, handling serious cases of lead poisoning referred to them by local clinics in the surrounding villages. It is mainly caused by ingestion and breathing of lead particles released in the steps to isolate the gold from other metals. This type of lead is soluble in stomach acid and children under-5 are most affected, as they tend to ingest more through their hands by touching the ground, and are developing symptoms often leading to death or serious disabilities. The treatment with MSF starts when blood lead level (BLL) samples reach 45 micrograms per decilitre. The Centers for Disease Control and Prevention (CDC) states that a BLL of 5 ?g/dL or above is a cause for concern. The cycle of medicines lasts for 20 days. After that, the child's blood is tested and a new round of treatment is provided. Treatment can last years, as lead is reduced in the blood, but it persists noticeably within the bones, especially if the patients return to the same polluted environment. Remediation of the affected villages, a campaign of awareness, and the introduction of safer mining techniques are pivotal to the long-term solution of a hazardous trend that has already killed over 460 children, and it is bound to grow in size, alimented by the ever-rising price of gold.