I think it is because there are many illeterate young ladies there and therefore because they lack finance to help themselves to buy needs and wants, they give themselves to man who are working in places like mine and soldiers, having unprotected sex in turn to get cash. futhermore in work places like at mine there are machines being used so under certain conditions workers get cut and trying to give a particular person first aid, in presence of HIV it passes to the othr one. thanks