The Journal of family practice
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While 46 percent of febrile children, aged 3 months to 24 months, will be well without treatment within 24 to 48 hours, and another 12 percent well within 72 to 96 hours, approximately 6 percent will have serious bacterial infections. The incidence of such infections tends to increase with decreasing age and increasing degree of fever. ⋯ Children with these laboratory findings should then have a chest film and blood culture and, if the former is negative, should be considered for a lumbar puncture and urine culture. Whether further observation or treatment at this point can be done as an outpatient depends on physician judgment.