Diagnosis of influenza.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001991:Bronchitis / Q000150:complications; D002648:Child; D002675:Child, Preschool; D003371:Cough / Q000209:etiology; D003937:Diagnosis, Differential; D005334:Fever / Q000209:etiology; D006261:Headache / Q000209:etiology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007251:Influenza, Human / Q000150:complications / Q000175:diagnosis* / Q000382:microbiology; D007827:Laryngitis / Q000209:etiology; D008027:Light; D008581:Meningitis / Q000175:diagnosis; D008875:Middle Aged; D009975:Orthomyxoviridae / Q000302:isolation & purification; D011014:Pneumonia / Q000150:complications; D012640:Seizures / Q000209:etiology; D014839:Vomiting / Q000209:etiology