Can you catch tummy bugs through kissing the infected person the day after they have been ill?
Noroviruses (Your typical case of “24 hour flu”, “stomach virus”, etc) are not transferred by saliva – The viruses are shed in the vomitus and the diarrhea caused by the virus. He will continue to shed the virus for a couple weeks following the illness, so he should make sure to practice excellent hygeine to prevent others from getting sick. Unless he has recently thrown up and he still had the viruses (from the vomit) in his mouth and on his lips, you will not “catch” it that way. However, since it has a normal incubation period of 12-72 hours, it has been brewing in him for a while, slowly increasing in numbers – and still being shed, just not in as many numbers as when he is full-blown sick. Norovirus is commonly transferred orally, but when someone handles either vomit or stool. It can be knowingly (such as wiping up a mess after a child’s accident) or unknowingly (such as when the person throwing up wipes their mouth and then uses the same hand to flush the toilet – the next perso
