Always a few cases now and then of people getting caught checking friends, family and foes.
Pretty sure that auditing is completely separate from the caregiver.
I believe each institution get printed access logs sent to them, which is never looked at.
(Source: Wife works at the hospital and has seen some people get fired shortly after unauhorized access.)
Better to keep the cat and the bacon separate, the temptation to peek is large and if there is one thing I know about people then it is that curiosity is a pretty common affliction.
And that is assuming that those accesses are on purpose, people can make honest mistakes as well and they will also look like unauthorized access.
Better to avoid that situation and implement auditing while making sure people know the rules are enforced.
Of course, both of them are prohibited (without a valid business reason), but the latter is easier to detect in an automated fashion.