A vaccination is a treatment which makes the body stronger against a particular infection. The body fights infections using the immune system, which is made up of millions upon millions of cells including T cells and B cells.
Pink eye in cattle, medically known as infectious bovine keratoconjunctivitis, is a contagious bacterial infection of the eye. Cattle pink eye is different from human pink eye, which, although usually infectious, is not highly contagious. Pink eye in cattle also looks clinically different and is usually much more severe than the disease in humans. Pink eye in cattle is most commonly caused by a bacterium called Moraxella bovis. This crafty microbe uses tiny hair like structures called pili to attach to the white part, or the conjunctiva, of the eye and cause damage.
In these instances, the discharge from the eye is clear and watery and symptoms of a cold may be present. Viral infections last from seven to 10 days. Bacterial pink eye generally results in a large amount of discharge that is green to yellow in color. This discharge can accumulate at night and make opening the eye difficult in the morning. Bacterial pink eye usually lasts three to five days and requires antibiotic eye drops to help the body remove the bacterial infection.