Would anyone know how to travel if you can’t get the vaccine because of medical reasons? My daughter had a horrible reaction to a flu vaccine and ended up in an ER. Her doctor said NOT to get the vaccine. Said if she does, to do so in an ER. And she works in healthcare and deals with Covid patients as well. Anyway, does anyone have any idea if She can travel with no vaccine and travel with a letter from her doctor. Have looked all over the internet and can’t find anything about this.