The shelter where I work hosted a Compassion Fatigue seminar today (I found this ironic, because it meant we had to cram a full day of work into three hours, then sit for eight hours and talk about how draining our jobs are...)
Compassion Fatigue and Compassion Stress are similar to Post-Traumatic-Stress-Disorder in that they are related to traumatic events or series of traumas, but they are sometimes called Secondary Trauma - the instance that is causing the Fatigue doesn't happen to the person who suffers the Fatigue.
Caregivers in all areas can fall victim - doctors, hospice workers, ministers, and (of course) shelter workers. In fact, shelter workers have an added issue, Euthanasia Related Stress, being as shelter work is the only industry in the world where it is our job to try to save and then intentionally kill the same beings. There is a quiz, akin to the Myers Briggs Personality Inventory, which can tell you if you are suffering from Compassion Fatigue yourself (I can't find the exact one I took today, but there are several others online). I scored very, very high. Animal workers in general tend to score higher than even other caregiving industries, but my results showed I'm very burnt out at this point, even when compared to my industry norm. I think I knew that anyway.
There were many things I didn't care for about the seminar itself, but I found the topic quite interesting, and I'm wondering if anyone here has ever looked into this issue, or sought out counselors or group leaders to help with the issue.

