Fever >38°CAssociated with inflammatory disease or pregnancy or preceded by upper respiratory infection, gastrointestinal infection, or vaccinationExcellent response to treatment with systemic glucocorticoids or potassium iodideAbnormal laboratory values at presentation (three of four of the following):Erythrocyte sedimentation rate >20 mm/hPositive C-reactive protein>8,000 leukocytes per microliter>70% neutrophils. This evidence concerns the gene CRP and respiratory tract infectious disorder.