What part of archived medical data would put lives at risk? I mean, it sure as hell puts their privacy at risk, but can you describe what scenario you are imag

What part of archived medical data would put lives at risk? I mean, it sure as hell puts their privacy at risk, but can you describe what scenario you are imagining that puts lives at risk? Just because it has the word "medical" doesn't mean it's life or death (and this appears not to be).