This fever thermometer makes it possible to conveniently and continuously monitor a baby’s body temperature. To this end, it can either be attached in the form of a silicone sticking plaster or wrapped around the baby’s body by means of a snug fabric strap. The thermometer registers body temperature with an indicated accuracy of 0.01 degrees centigrade and a deviation of a maximum of + / −0.1 degrees centigrade in real time and warns of high fever with an alarm signal. This saves the child, parents and hospital staff from repeatedly having the temperature taken.