There is a high incidence of of infant mortality and the children are usually very small for their ages. Most of these children have rickets by the age of 1 year which causes bone malformations and depigmentation of their hair. Although China does try to vaccinate the population against childhood diseases, there is rarely enough vaccine to go around or it is well out of date. And these nomadic people living in such remote areas are the bottom of the list. TB is everywhere, and there are many forms of it. Few people escape contracting this disease. If a disease takes hold, most of the children or members of the family will succumb to it. Last year 3 children in one family died of measles. Their problems just with living are so great, that it is simply devastating to have such a loss.