It's also worth adding that people often put over emphasis on fever. It's generally also safe to let them ride unless it goes over 105 F, 41.5 C in which case it's getting close to being harmful, but suppressing also doesn't seem to have all that much of an effect on the course of the illness. It is possible that in severe illness before the development of modern medicine it was medically advantageous, but we now have better tools than fever to treat such things like antibiotics or other drugs depending on the illness.