guido sabatinelli, an epidemiologist, is with the u.n.orld health organization, which is helping to fund the medical assistance. >> the water they use for washing themselves, or they don't wash. they go days without washing. look at this children. this is scabies. look at that. >> reporter: and how serious is this? >> this is a very heavy infection. >> reporter: and spreads? >> and spreads all over the body, of course, and of course it spreads inside the community, because also this is contagious. this is a family-- probably all the family has the same. so this is just the child, but the mother, the father, all the other children, they are in the same condition. >> reporter: health dangers are compounded when the tents are pitched, as they often are, close to standing pools of water. what does that mean in terms of the health risks? >> very soon, we will have, if they are not already present, mosquitoes. i can check. yes, look at that. this is a anopheles. this is a larva. malaria will occur, of course. in pakistan every year, there are o