Ginger ale or 7up helps with stomach ailments. Also, the sugar helps keep up energy. Granny's wisdom was "feed a cold, starve a fever".
If there is a relaps (often happens during the day) and the fever fets up around 103 again, a full body wipedown with cool (not cold!) water mixed with a bit of rubbing alcohol will help keep it under control. As best I can remember, 103F is a critical point beyond which, physical damage can occure. Above all, keep the head cool.
