In plain words
Staphylococcus aureus, often called staph, is a bacterium that many people carry on their skin or in their nose without any problem. Most of the time it causes no harm. Under some conditions, it can cause skin infections, wound infections, and infections of the breast. In breastfeeding, staph is one of the germs most often found in cases of infection, along with other skin bacteria. , milk that stays in the breast, and recent antibiotic use are discussed as factors that may favor it. Mothers may hear the name when a culture is taken from a nipple or breast. A culture result helps guide care, and the team reads it alongside symptoms.
The deeper version
Staphylococcus aureus is a gram-positive coccus that colonizes the anterior nares and skin in a substantial share of healthy adults. In lactational it is among the most frequently isolated organisms from milk cultures. A proposed model describes a , a shift toward S. aureus or coagulase-negative staphylococci with formation inside ducts, that underlies , favored by antibiotic exposure, oversupply, and milk stasis. Culture is not routinely required for uncomplicated mastitis, and the Academy of Breastfeeding Medicine clinical protocol on mastitis (Protocol 36) describes when it is used. Methicillin-resistant strains are reported in community and hospital settings, which affects empiric choices, a decision left to clinicians.
Where it comes up
- Clogged ducts and mastitisPostpartum: Your Body
- Nipple pain, cracks, and healingPostpartum: Your Body
- Thrush and other nipple infectionsPostpartum: Your Body
What mothers here say about Staphylococcus aureus
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Sources
- Academy of Breastfeeding Medicine — Clinical Protocol #36: The Mastitis Spectrum, 2022