Means of spread
The primary means of spread appears to result from performing intramammary treatments without following aseptic procedures. Sometimes, exposure to these pathogens may arise from contamination in the environment and possibly, from cow to cow transfer at milking when improper procedures are used or milking equipment function is faulty.

Basic prevention and control measures
Aseptic intramammary infusion with single dose sterile treatment tubes should be used. Proper medical attention to teat injuries will minimize intramammary infection. Stripping out infected quarters, and proper cleaning and sanitation of milking equipment will reduce exposure. Identify sources of infection if multiple cases occur.

Miscellaneous information
Avoid antibiotic treatment of quarters infected with fungi: it may exacerbate the clinical signs of mastitis. Most yeast infections are eliminated spontaneously within two months. Yeast infections are often misdiagnosed; however, intramammary infections caused by fungi are very sporadic, and usually of little significance on a herd basis.