social animals

The flu reminds us that humans, as social creatures, are more susceptible to contagious disease than more solitary species. But do other social species treat contagion differently and could there be evolutionary insights to discover?
Vervet monkeys can be testy. Squabbling between social groups is common, particularly when food is at stake.
Though reality TV would seem to challenge the notion, highly social creatures tend to be more intelligent than non-social creatures. The reason is because it takes brain power to communicate and thrive in a society.