My boyfriend had the stomach virus..he fell ill on Thursday night and stop vomiting around 4am Friday morning.  We were together last night (Sunday evening) and were kissing.  Does this put me at risk for contracting the virus?  I have read that the stomach virus is only transmitted via fecal-oral transmission OR by particles in the vomit...is this correct or can it also be transmitted via saliva from kissing a couple days after as well?
Thanks for following up. Stomach flu is caused by swallowing different viruses. Infected people can spread the virus through their secretions, sometimes even before their symptoms begin. The virus can be spread by direct contact with an infected person (for example, kissing or shaking hands) or by sharing food, Chat Doctor.  You can try to boost your immunity with ginger, lemon and turmeric powder tea,