Giardia lambia infection is common in:

Selective IgA deficiency is associate with infections like G. lamblia, hepatitis virus, S. pneumoniae, and H. influenzae Immunodeficiencies and common infections: Selective IgM deficiency: S. pneumoniae, H. influenzae, E. coli Common variable hypogammaglobulinemia: Pneumocystis, Cytomegalovirus, S. pneumoniae, H. influenzae Severe combined immunodeficiency: S. aureus, S. pneumoniae, H. influenzae, Candida albicans, Pneumocystis, Varicella-zoster virus, Rubella virus, Cytomegalovirus Ref: Harrisons principles of internal medicine, 18th edition, Page: 1010.