Final answer:
Mastitis refers to the inflammation of mammary glands in cows caused by bacterial infection. It can be easily transferred from cow to cow by the milker's hands.
Step-by-step explanation:
In the context of the given information, mastitis refers to the inflammation of mammary glands in cows, caused by bacterial infection. It is indeed possible for mastitis to be easily transferred from cow to cow by the milker's hands. This is because the bacteria that cause mastitis can be present on the milker's hands and can spread to other cows during the milking process. Thus, proper hygiene practices, such as washing hands thoroughly, are crucial in preventing the spread of mastitis.