You cannot kiss if you are positive for H. pylori.
This is because the saliva of a positive patient also contains H. pylori, which can be transmitted through saliva when kissing, thus causing the person he or she is kissing to become infected, and so he or she is not allowed to kiss.
In addition, positive patients should not feed chewed food to others, which can also lead to H. pylori infection in the other person. Since H. pylori is a gram-negative, microaerobic bacterium, it can survive temporarily in isolation. Therefore, in addition to the “oral route”, there is also the “fecal-oral route”.
The “fecal-oral route” is generally due to the fact that H. pylori can be detected in the saliva and feces of the patient, which are new sources of infection that may lead to infection in others. To prevent H. pylori infection, you should actively use communal chopsticks when gathering for meals, pay attention to personal hygiene, and wash your hands after bowel movements and before meals.
Positive H. pylori is spread in other ways besides not being able to kiss or share utensils with others. If you feel unwell, it is recommended that you go to a specialized hospital immediately, get treatment under the advice of a doctor, and do effective isolation.