Osteomyelitis
Organism
Osteomyelitis
Staphylococcus aureus (GPC) (60%).
Infant: S. aureus, Enterobacteriaceae (GNR), groups A and B streptococci (GPC).
Child (<3 years): H. influenzae (GNCB), S. aureus, streptococci.
Child (>3 years) to adult: S. aureus, coagulase negative staphylococci, Group A streptococci, Pseudomonas aeruginosa.
Postoperative: S. aureus, Enterobacteriaceae, Pseudomonas sp. (GNR), Bartonella henselae (GNR).
Joint prosthesis: Coagulase-negative staphylococci, peptostreptococcus (GPC), Propionibacterium acnes (GPR), viridans streptococci (GPC in chains).
Immunocompromised patients (eg, elderly, HIV-infected): M. tuberculosis, M. avium-intracellulare (MAC) , Candida sp., cryptococcus, coccidioides, histoplasma.
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