Mastitis

Background

• Acute inflammation of the breast tissue
• Main causes appear to be either milk stasis (causing non-infectious inflammation) and infection

Microbiology

• Often non-infectious
• Staphylococus species are most common
  • Staphylococcus aureus
  • Coagulase-negative staphylococci, particularly Staphylococcus epidermidis
• Streptococcus species, including Streptococcus mitis, Streptococcus salivarius, and Streptococcus parasanguinis
• Others: Rothia, Corynebacterium tuberculostearicum and other corynebacteria, Enterococcus