In pediatric patients, osteomyelitis is most commonly due to which pathogens?

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Multiple Choice

In pediatric patients, osteomyelitis is most commonly due to which pathogens?

Staphylococcus aureus is the most common cause of osteomyelitis in children. It often reaches bone through the bloodstream and seeds the metaphyseal regions of long bones, where the blood supply is slow and turbulent, making infection more likely. In the past, Haemophilus influenzae and some Group B Streptococcus infections were more frequent in young children, but vaccination and changing epidemiology have markedly reduced those organisms. Other bacteria like E. coli or Pseudomonas are less common as primary causes in otherwise healthy pediatric patients and tend to be associated with particular circumstances (neonatal origins or specific exposures). In very young children, Kingella kingae is increasingly recognized as a notable cause, but Staphylococcus aureus remains the leading pathogen overall.

Staphylococcus aureus is the most common cause of osteomyelitis in children. It often reaches bone through the bloodstream and seeds the metaphyseal regions of long bones, where the blood supply is slow and turbulent, making infection more likely. In the past, Haemophilus influenzae and some Group B Streptococcus infections were more frequent in young children, but vaccination and changing epidemiology have markedly reduced those organisms. Other bacteria like E. coli or Pseudomonas are less common as primary causes in otherwise healthy pediatric patients and tend to be associated with particular circumstances (neonatal origins or specific exposures). In very young children, Kingella kingae is increasingly recognized as a notable cause, but Staphylococcus aureus remains the leading pathogen overall.

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