Genetics and infection.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007153:Immunologic Deficiency Syndromes; D007223:Infant; D007239:Infections / Q000235:genetics*; D008297:Male; D008661:Metabolism, Inborn Errors / Q000201:enzymology; D008875:Middle Aged