It is a must that the immune resistance of the body to the patient is symptomatic of an infection such as bacterial to seize the opportunity, some types of cancer, such as a caching proxy code Wizard Pro (Kaposi'ssarcoma) and cervical cancer. To seize the chance of infection means infection that usually has a low severity of disease in normal people, but not if that person has a lower resistance, such as from cancer or from receiving the drugs each caused the liver, lungs, lymphatic tuberculosis or the brain.