In most of the rest of the world, anthrax in animals occurs only sporadically. In the United States, outbreaks in animals have occurred since 1990 in the Midwest (Kansas, Minnesota, Missouri, Nebraska, North Dakota, South Dakota), in the West (California, Nevada), and in Texas and Oklahoma (MBAH 2006, WHOCC).
lethargy (countable and uncountable, plural lethargies) ( 1 pathology) A condition characterized by extreme fatigue or drowsiness, or prolonged sleep patterns. 2  A state of extreme torpor or apathy, especially with lack of emotion or interest; loosely, sluggishness, laziness.
That's the word I was looking for! It's not lethargy, it's apathy.. These two terms - along with anhedonia, which means loss of interest in pleasurable activities - have some similarities in their meaning as used to describe symptoms of bipolar depressive episodes and clinical depression. What's interesting is their differences.