Does My Child Have a Primary Immunodeficiency Disease?

As a practicing pediatrician, I am frequently asked by parents if their child is unusually sick--could there be something wrong? I reassure them that children in day care, particularly from six to 30 months of age, typically get a new infection every three weeks .

http://www.dukehealth.org/health_library/advice_from_doctors/your_childs_health/does-my-child-have-a-primary-immunodeficiency-disease?