 [ Symptoms ] will i catch the stomach bug from toddler when will he be better  my 3yr old threw up twice yesterday morning together food then bile i think napped drank cup milk threw up once more drank pedialite&gatoraid was fine rest of daynight today was fine all day drank milk through out day ate 3 nuggets&whole apple went to bed at 1030 got up few min ago at 130am threw up twice and now has diareah when will he get better will me or my twin 6 month olds catch it i read a lot of adults will not because we build up some immunity please help [ Disease ] adults do have better immune systems and exposure to any infectious disease does not automatic imply that you or a sibling contact will get it but you may there are just too many variables to be able to predict if someone will also become ill your twin six month olds are more vulnerable of course since they are at the end of their maternal immunity stage only time will tell for all of you