• Due to stasis of Milk in breasts, ineffective removal of milk leads to accumulation of milk in breasts, which provides a favorable environment for the growth of pathogenic microorganisms.
• Symptoms are fever and malaise; the breast becomes red, painful, swollen and hard.
• Milk culture test is done to identify the causative bacteria for infectious mastitis 
• Antibiotic sensitivity test is done to identify which antibiotic can be used for treatment of infectious mastitis.

Recurrent (Re-infection) Mastitis may be due to delayed or inadequate treatment of the initial condition or uncorrected poor breastfeeding technique.