Which pathogen is commonly associated with mastitis?

• A. Klebsiella pneumoniae
• B. Staphylococcus aureus
• C. Mycobacterium haemophilum
• D. Cutibacterium acnes

Answer: (B)

Staphylococcus aureus is the pathogen commonly associated with mastitis, particularly in breastfeeding women. This bacterium is part of the normal flora of the skin and can easily enter the breast tissue through cracked or sore nipples, leading to infection and inflammation. In mastitis, symptoms may include breast pain, swelling, redness, and flu-like symptoms such as fever and malaise. Staphylococcus aureus is particularly virulent and can rapidly cause severe infections, making it a primary concern when a woman presents with signs of mastitis.

Other pathogens listed, while they may be associated with various infections, are not typically the main pathogens involved in mastitis. Klebsiella pneumoniae is more commonly associated with hospital-acquired infections and respiratory issues. Mycobacterium haemophilum is not typically linked with mastitis but rather associated with skin and systemic diseases in immunocompromised patients. Cutibacterium acnes, previously known as Propionibacterium acnes, is primarily associated with acne and other skin conditions rather than with mastitis. Therefore, Staphylococcus aureus is the most relevant and frequently isolated organism in cases of mastitis among lactating women.