Mycoplasma bovis 

Mycoplasma bovis is a bacterium that causes a range of diseases in cattle including mastitis that doesn’t respond to treatment, arthritis, pneumonia and late-term abortion. 

It is mainly spread by direct contact between infected animals and on equipment that has been used on infected animals, e.g. used for milking, artificial insemination, veterinary procedures.  It spreads through bodily fluids including mucus and vaginal secretions.

For more information see the links below:

Dairy NZ - Mycoplasma - everything you need to know