Worried about lung infection is superfluous

Many people are worried about lung cancer will spread, experts advise: No, the exact said that so far the cancer will spread.

The so-called transmission, is a disease from one person through some sort of transmission to another person. Transmission must have three conditions: The source of infection, transmission and the susceptible population, one can not do all three. Clinical data show that cancer patients are not infectious.

Before, we all think that "pulmonary disease" is contagious, this "lung" is tuberculosis. Patients suffering from tuberculosis in sputum-positive at the open as tuberculosis, a contagious and therefore met cough, sputum, blood in the sputum of patients should pay attention to disease prevention. Tuberculosis is transmitted by respiratory diseases, lung cancer and tuberculosis different, lung cancer is in a variety of different factors, the local cell dysplasia, loss of normal cells and dynamic form of cancer. The sputum from the sputum of cancer due to water evaporation and other reasons, the rapid cancer cell degeneration and necrosis, even if fresh sputum, to make cancer cells in vitro growth, reproduction, but also need to give all kinds of nutrition and specific conditions. Scientists to foster a live cancer cells often require untold hardships can be successful, the cancer will not be borne.

Animal experiments, will take of animals and non-keeping of animals common, after a very long time and found no direct its transmission. Some families have more than a lung cancer or other tumors, this may be with family members and have a common gene and they may be at the same carcinogens in the environment. Such as smoking, radioactive substances, such as contacts, with members of the family can have a malignant tumor.