RT Journal A1 Warren MD, Arbogast PG, Dudley JA, et al T1 ADherence to prophylactic antibiotic guidelines among medicaid infants with sickle cell disease JF Archives of Pediatrics & Adolescent Medicine JO Archives of Pediatrics & Adolescent Medicine YR 2010 FD March 1 VO 164 IS 3 SP 298 OP 299 DO 10.1001/archpediatrics.2009.286 UL http://dx.doi.org/10.1001/archpediatrics.2009.286 AB Infants with sickle cell disease have as much as a 100-fold increased rate of pneumococcal infection compared with the general population.1 Penicillin prophylaxis has been shown to reduce the risk of pneumococcal sepsis by 84%.2 Thus, sickle cell management guidelines include twice daily penicillin doses for infants and young children.3 While studies have described low rates of adherence to prophylactic antibiotic guidelines in older children, little is known about the initiation of prophylactic antibiotics in early infancy, a period of great vulnerability.4 We describe adherence to guidelines for initiation of prophylactic antibiotics in a cohort of Medicaid infants with sickle cell disease in Tennessee and examine risk factors for nonadherence.