title: Predisposing streptococcal disease conditions.
mesh_terms: D000293:Adolescent; D002353:Carrier State; D002675:Child, Preschool; D006801:Humans; D009329:Nebraska; D013290:Streptococcal Infections / Q000175:diagnosis*; D013291:Streptococcus / Q000302:isolation & purification*