1) Whether it is a real emergency or it a threat to you and or the public.
2) They have a job to do and it help out a community of people so they are risking more people
3) Most likely the people who need it like handicapped, special needs, addicts, etc.
4) It would depend on your surroundings and state of mind. Because it can last if you don't make an improvement to change something
5) How sever the illness is and or what they are dealing with