If you or someone you know is affected by 2 or more of the below warning signs, speak to a physician about the possible presence of an underlying primary immunodeficiency.
- Four or more new ear infections within 1 year.
 - Two or more serious sinus infections within 1 year.
 - Two or more months on antibiotics with little effect.
 - Two or more cases of pneumonia within 1 year.
 - Failure of an infant to gain weight or grow normally.
 - Recurrent, deep skin or organ abscesses.
 - Persistent thrush in mouth or elsewhere on skin.
 - Need for intravenous antibiotics to clear infections.
 - Two or more deep-seated infections, including septicemia.
 - A family history of primary immunodeficiency.
 
