If my temperature ever goes up to 98.6, that means I’m sick. I normally run 96 - 97. Point is, there is a range of normal temperatures, so judging whether someone is sick or well by taking temps is a formula for disaster.
I went in to have some moles removed a few years back and I was over 99--I might have even been just over 100. They consider that surgery (removing moles) and contemplated not doing it that day. They determined it was probably normal for me and proceeded.