Is gallbladder cancer contagious through saliva?

Over the past many years, the question of whether cancer is contagious has been frequently asked and has been the subject of much scientific research. This question has gained even more attention since the discovery in 1908 that viruses can cause tumors. Gallbladder cancer is the most common malignant tumor in people's lives, and the mortality rate is also very high. Is gallbladder cancer contagious?

The difference and connection between the infectiousness of viruses and gallbladder cancer Generally speaking, viruses are infectious, but the infectiousness of various viruses varies. Whether the disease occurs after viral infection is closely related to the body's defense function. Some viruses can also cause human tumors, which objectively exists as a material basis for the possibility of tumor infection. Viruses or such virus particles have also been found in human nasopharyngeal cancer, breast cancer, leukemia, cervical cancer, and melanoma.
Clinical data proves that gallbladder cancer patients themselves are not the source of infection. Experts have conducted experiments in which cancerous tissue removed from a gallbladder cancer patient was directly implanted in another person and could not survive and grow. Infection is the transmission of a disease from one person to another through some means. Infection must have three conditions: the source of infection, the route of transmission and the susceptible population. All three are indispensable. Moreover, cancer is not listed as an infectious disease in the world, and the incidence of gallbladder cancer among nursing staff in cancer hospitals is not higher than that of the normal population. Therefore, family members and contacts of gallbladder cancer patients do not need to worry too much, as gallbladder cancer is not contagious.