Our 1st son w/SWCAH was 4 months old when he was hospitalized with some sort of bug.  We took him to the ER after vomiting around 2am & after 6hrs in the ER, they admitted us for the day to be cautious.  That thankfully is the only time so far he’s been in the hospital -he is almost 2 1/2.  he did get the flu shot this year & my doctor is also giving it to me because I also have a 4mo old SWCAH son who cannot have the shot (not yet 6mos).  I worry all flu season long about illnesses, but my oldest is in a gym program this year, so we will just do our best to be preventative. We’re cautious, but we also want our children to experience a "normal" life. Best wishes! Lets hope by some grace its not a bad season!