Answer: Diabetes and Yellow fever
Diabetes
Diabetic kidneys cannot process as much sugar as a healthy kidney. Some diabetes is temporary, when a mother is pregnant, it can cause them to have diabetes. (NOTE: A pregnant woman should always have a diabetes test while they are carrying) Pregnancy diabetes will go away shortly after the child is born.
Yellow fever
Yellow fever is much more harmful than diabetes, and can sometimes, without proper health care, be fatal. A kidney infected with yellow fever will not filter out all the bacteria and waste properly, making the outside of people and animals have a yellow tint, which is most visible in the eye. Yellow fever is passed on from mosquitos.