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Table 2 The Jeffrey Modell Foundations' 10 warning signs of immune deficiency. [12]

From: Primary immunodeficiency

1. ≥ 8 new ear infections with in 1 year.
2. ≥ 2 serious sinus infections within 1 year.
3. ≥ 2 months on antibiotics with little effect.
4. ≥ 2 pneumonias with in 1 year.
5. Failure of an infant to gain weight or grow normally.
6. Recurrent, deep skin or organ abscesses.
7. Persistent thrush in mouth or elsewhere on skin, after age 1.
8. Need for intravenous antibiotics to clear infections.
9. ≥ 2 deep-seated infections.
10. A family history of PID.