Uncommon Infections in Children Suggest Underlying Immunodeficiency: A Case of Infective Endocarditis in a 3-Year-Old Male

Table 1

Immune workup showed the following labs.

Immunoglobin	Level	Reference range
IgG	<30	331–1090 mg/dL
IgA	<5	13–157 mg/dL
IgM	6	41–190 mg/dL