Will rectal cancer infect _'s general knowledge

Will rectal cancer infect _'s general knowledge
Has rectal cancer been infective on earth? This is the question that patient and his relative care about most. A lot of materials show, in the risk factor of cancer, 80% relate to environmental factor. Some cancers such as hepatocarcinoma, gastric carcinoma, nasopharyngeal carcinoma,etc., though infect connection with the virus, but there is not one that can prove cancer can really be infected, and in investigating the medical worker who is engaged in making a diagnosis and giving treatment in tumour, the morbidity of suffering from cancer is not high.
Cancer cell have four shift route, spread directly, lymphocytic way shift and the intersection of blood and dish shift and plant and shift, will not be infected by other routes. And the generally normal skin will not be infected to contact it, however, when the skin have damage, contacting the cancer cell will be planted, in this way the cancer cell is shifted, but not pass to others. So no evidence can also indicate at present rectal cancer can be infected.
Over the past several numerous more than years, the question that cancer will be infected is often put forward, and carried on constant observation research. Especially since 1908 after finding that the virus can cause tumour, this question was more noticeable. Say from the general concept, the virus has an infective one, but the contagiousness power of different virus is different. After the virus is infected, clinical only 1%- 1 of person who have illness coming on, but more persons do not have illness coming on, in recessiveness to infect the state. Whether the virus has illness coming on after infecting, with defending the function and having important relations of the organism. The organism defends the function strongly, even virus is infected, may not disease does not take place all the life either. The sixth of the twelve Earthly Branches confirms, there is the 30th multi-type tumour that 100 multi-type virus can cause the animal now. Some virus still can cause human tumour. In this way, from having material base that tumour may be infected objectively. In people's Birket's lymphoma, nasopharyngeal carcinoma, breast cancer, leukemia, cervical cancer, melanin tumour, also found virus or this kind of virus particle.
Moreover, in animal's experiment, someone will suffer from the spleen blood of the straining sarcomatous chicken, it inject it get at being healthy for body of chicken,result chickens healthy must straining sarcoma. Somebody let suck suffer from the intersection of breast cancer and little the intersection of mouse and flea of blood, and then bite the little healthy mouse, a tumour inoculates on little healthy mouse successfully as expected. But this kind of experiment has not been confirmed by the same one on people's body so far. And even on animal, with suffering from the healthy animal that the cancer animal lived together, have not found either they are infected cancer directly. The foreign physician has observed the patient in the tumour sanatorium for a long time, find it with the cancer patient of ulcer, and the cancer patient who has ulcer, get along together for a long time, has never infected each other among them. On the other hand, through doctor's therapeutic cancer patient being innumerable, but the doctor's ill rate of cancer is not high than common people. Ubiquitous a large number of fact that suffer from animal and healthy animal of cancer, live room first together at present, have not found the example infected directly. Different kind cancer patients cohabit in room one for a long time in the hospital, over the years, have never found that infect each other.
The medical worker contacts the cancer patient for a long time, has not found they increase than the cancer morbidity of common people. These facts prove, general tumour is not infective, with the tumour patient's general contact, will not be infected. So until today, all hospital take isolating the system for the tumour patient.
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