From last couple of days my wife's body temperature is fluctuating between 97 to 99 degree. She has no other symptoms like cold, cough, headache, vommitting etc. She has recently started going to office however neither she has travelled nor there is any Corona case around us. However before two days her body temperature was around 95 to 97. Is there a matter of concern. And does she need to take any sort of precautions?