Outbreaks of clinical mastitis caused by Trichosporon beigelii in dairy herds.

Trichosporon beigelii is widely distributed in nature and is classically associated with white piedra, a mycosis that may involve the hair of the human body. Intramammary infections caused by T beigelii may be fatal in cows; the prevalence in affected dairy herds may be high. Affected cows may have hyperthermia, swelling of the udder, and substantially decreased milk production or agalactia.