1.Cancer is not transmitted through common contact between people Lung cancer is not transmitted through breathing, but can a pregnant woman transmit cancer to her fetus in her womb? Some cancers can spread to the placenta, but in most cases, it will not spread to the fetus, only melanoma has been reported to transmit to the fetus. Sometimes you will see this phenomenon where there are two identical cancer patients in a family, but this is actually because they or they share the same cancer-causing genes or living environment. For example, if a mother has breast cancer and her daughter gets breast cancer because she got the BRCA1 gene from her mother, this can also happen between sisters in the same family. In addition, the same poor dietary habits or exposure to the same cancer-causing factors can lead to multiple cancer patients in the same family. Some cancer villages have emerged as a result of severe environmental pollution. Therefore, when one of your friends or relatives has cancer, just get along with them as before. Don’t be afraid to visit the patient’s home or ward, and don’t be afraid of physical contact like shaking hands or hugging at all, knowing that the patient especially needs your care and support at this time. When people are diagnosed with cancer, they tend to be more sensitive, so don’t let them feel isolated and helpless. On the contrary, if you are a cancer patient yourself, you should also confidently contact with your friends and colleagues, because, cancer is not contagious. 2. Viral infections caused by sexual contact may lead to cancer For example, Human Immunodeficiency Virus (HIV) causing AIDS can lead to cancer due to low cellular immune function, and chronic infection of Human Papillomavirus (HPV) can lead to cervical cancer. In addition, chronic viral hepatitis is a major cause of liver cancer, and human T-lymphocyte type 1 virus can cause leukemia. 3. Is there cancer transmission between animals? However, direct transmission of cancer does occur in animals. Three kinds are known now. (1) pouched badger facial tumour disease pouched badger facial tumour disease (Devil Facial Tumour Disease) is a direct transmission of cancer, mainly through mutual biting and food sharing and transmission. The first is around the mouth lesions and lumps, and then develop into cancerous tumors, and then later spread to the whole body, resulting in the failure of various organs and death. Kangaroos have a 100 percent mortality rate at 18 months after infection. This cancer was discovered in Australia in 1996, and the prevalence in pangolins has led to a 50% decline in the population of this animal in Tasmania, Australia. (2) Canine Transmissible Venereal Tumor There is also Canine Transmissible Venereal Tumor, which is transmitted through mating. This cancer was discovered in 1876 by the Russian veterinarian Naweiski. In male dogs, the tumor affects the penis or foreskin; in female dogs, the tumor grows in the vagina or labia. This tumor is sensitive to vincristine, vincristine sulfate, and adriamycin chemotherapy and is often curable. (3) Infectious reticulum cell sarcoma The third type of sarcoma is infectious reticulum cell sarcoma (Reticulum Cell Sarcoma). This sarcoma can be transmitted among Syrian hamsters by the bite of a mosquito. This story was detailed in the May 28, 1965 issue of Science magazine, it is really a small mosquito fierce invincible ah. 4.Summary of cancer can be transmitted? Not in people; in animals, there really is!