Etiology

Newborns, Staphylococcus aureus, Enterobacter species, group A and B Streptococcus species.

Children, Staphylococcus aureus, group A Streptococcus species, Kingella kingae, and Enterobacter species.

Adolescents ,Staphylococcus aureus (80%), group A Streptococcus species, H. influenzae, and Enterobacter species

Adults, Staphylococcus aureus and occasionally Enterobacter or Streptococcus species

Sickle cell anemia patients, Salmonella

IV drug users or puncture wounds, Pseudomonas.

Immunocompromised, Fungi.