Can the thing that eats gastric cancer patient to eat leftover infect

Gastric cancer patients eat leftovers will not be infected with gastric cancer, but may be infected with helicobacter pylori. The occurrence of gastric cancer and helicobacter pylori infection has a certain relationship, helicobacter pylori belongs to a class of carcinogens, long-term helicobacter pylori infection can lead to atrophic gastritis, and may cause precancerous lesions of gastric cancer, there is a possibility of development of gastric cancer. Helicobacter pylori is infectious, mainly through the mouth-to-mouth route, fecal-to-mouth route transmission, and gastric cancer patients sharing tableware or kissing, mouth-to-mouth feeding, may be infected.