When a previous kidney is infected then the doctors must carry out two operations. The infected kidney is first taken out and patient is adviced for complete rest for one month and then when patietns feels healthy then only the second transplant is done. Some preventive precautions that must be taken to ensure a healthy kidney like sodium intake should be less, if the patient is diabetic then sugar level must be controlled, Blood pressure should be controlled, pain killer must not be consumed much, avoid eating fried food, sweets, pickles, food containing oxalic acid like spinach, tomato, etc. Nature cures not the physician. If we follow this we can cure every disease through nature.