<qa>  What is a fever defined as?- A fever defined as an oral temperature of 100.4 Degree F 38.0 DegreeC or greater, rectal temperature of 101.4 Degree F 38.4 DegreeC or greater, or an axillary temperature of 99.4 Degree F 37 DegreeC or greater. Hypothermia defined as a temperature less than 96.8 Degree F 36.0 DegreeC. 