Vaccines reduce severity. Feed antibiotics to prevent, Long acting terramycin to stop outbreak. No signs in cows. Cattle usually confined. Calves born with skin lesions and lung infections.
All feeds contain fungal spores.
Poor silage and wet hays have most contamination. Ingested-spores carried to placenta and fetus by blood stream. Sporadic between 4 mo. and term. Not carried by animals. Do not feed moldy hay, grain or silage to pregnant animals.