Which organisms are commonly involved in septic arthritis in children?
Considerable institutional variation exists, but the most common organisms in various age groups are as follows:
|Neonates (<2 months old)||Age 2 months to 5 years old||Age 5–15 years old|
|S. aureus||Kingella kingae||S. aureus|
|(hospital-acquired)||S. aureus||Streptococcus pyogenes|
|Streptococci (Group B)||Streptococcus pyogenes|
|Gram-negative bacilli||Streptococcus pneumoniae|
|Hemophilus influenza (less common due to vaccination)|