Patient presents...1. onset of recurrent bacterial infx in first 5yrs of life 2. serum igg, igm, iga are at least 2 sd below normal for age 3. poor response to vaccines 4. less than 2% cd19+ b cells in peripheral circulation - Dx?

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1. Patient presents...1. onset of recurrent bacterial infx in first 5yrs of life 2. serum igg, igm, iga are at least 2 sd below normal for age 3. poor response to vaccines 4. less than 2% cd19+ b cells in peripheral circulation - Dx?