Murrain

Murrain (also known as distemper) is an antiquated term for various infectious diseases affecting cattle and sheep. The word originates from Middle English moreine or moryne, as a derivative of Latin mori "to die".
The word murrain, much like the word pestilence, did not refer to a specific disease but rather was an umbrella term for what are now recognized as a number of different diseases with high morbidity and mortality, such as rinderpest, erysipelas, foot-and-mouth disease,... meer