Some of the other stories on the topic seem to indicate the most likely indicator here - calls to 911 are automatically matters involving "law enforcement", and are shared between countries.
It's actually something I hadn't considered before - if you call 911 for an ambulance, that info goes in to police records/databases related to your name even if not about an arrest.
The lesson here isn't about secret sharing - it's that if you (or someone you care about) has an issue that may be used against you later, do everything in your power to go to the hospital yourself rather than calling 911.
I can imagine an usecase - if your relative or friend is unexplainably not found at home or office, so is effectively 'disappeared' from you - then in a pre-internet era you might not want to search all the hospitals in new york to check if (s)he's there.
It's actually something I hadn't considered before - if you call 911 for an ambulance, that info goes in to police records/databases related to your name even if not about an arrest.
The lesson here isn't about secret sharing - it's that if you (or someone you care about) has an issue that may be used against you later, do everything in your power to go to the hospital yourself rather than calling 911.
It depresses me to think I just wrote that.