DS1 has only been vomiting sick once and that lasted 2 days. Had mild hand foot and mouth and croup once. Otherwise just colds.
DS2 had a virus which caused him to need a puffer for a month. Other than that just colds.
For us DS1 gets it off his friends that go to daycare then gives it to DS2 but thankfully nothing bad enough to keep them in bed for a week. I hope your kids feel better soon. I would talk to a paed or different doctor. Obviously the antibiotics aren't helping and the fever isn't fighting the infection enough.
Sent from my telecommunications device.