For AI, being ≤60 months of age, the presence of cough, runny nose and absence of diarrhea, rash, abdominal pain, vomiting, nonexudative conjunctivitis, lymphadenopathy, tachycardia, bradycardia, hypotension, hypoxia seizures, agitation, headache, and altered consciousness, lymphopenia, thrombocytopenia, and C-reactive protein value <124.5 mg/L were determined as each parameter plus one point. The gene discussed is CRP; the disease is lymphopenia.