What diseases could cause a child to have a fevers for 2 weeks?

Infections: It is always very concerning when a neonate has fever. At this age it raises concerns as infants do not have a fully developed immune system , and it could be a severe infection. If your 2 week old has fever over 100.5 rectal you need to go se your baby's doc or go to the E.R.

Fever: If your child has had fever for 2 weeks your child should see a doctor. A fever lasting longer than 5 days brings concern for possible kawasaki disease. If that is not what is going on then your doctor may want to do some tests, blood work or chest xray to help figure out why your child has had fever for 2 weeks.