My 3 year old has had a low-grade temp for 3 months. She did start pre-school this year. Her doctor thinks it s a virus after virus, but I m not sure. She had her tonsils out about a month ago, because she kept getting strep . But, she still has the temp, usually 99-99.6. They also keep saying that s not really a temp, but I feel it s not really normal either, for 3 months anyway.