National Center for Biotechnology Information NCBI NLM MEDLINE humans pubmed abstract nih national institutes of health national library of medicine treatment outcome research support non-u.s. gov't u.s. gov't adult female male N.I.H. Extramural aged middle aged P.H.S. Randomized Controlled Trial Double-Blind Method anti-bacterial agents / therapeutic use community-acquired infections / microbiology methicillin resistance* microbial sensitivity tests staphylococcus aureus / drug effects* community-acquired infections / drug therapy* staphylococcal infections / drug therapy* staphylococcal skin infections / drug therapy community-acquired infections / pathology pmid:17846141 pmc2151464 doi:10.1128/aac.00377-07 priya m rajendran david young hobart harris abscess / drug therapy abscess / pathology cephalexin / therapeutic use* staphylococcal infections / pathology staphylococcal skin infections / pathology