Maybe, but I think health information disclosure has a lot of rules to it (at least based on my experience) where authorizations expire after 1 year etc... So I don't think a blanket exception applies. And although Facebook is a public forum not all communications are public per se so it's not clear what a disclosure is... maybe it is sufficient for Facebook to say that the information was "disclosed to us" and we are free to do what we want with it, including using an AI bot to alert emergency services. It seems like a big gray area.
> Facebook is a public forum not all communications are public per se so it's not clear what a disclosure is...
It doesn't matter. Once you surrender data to Facebook it is theirs to do whatever they want with. That is the disclosure. There is no gray area. If you don't want Facebook having that information then don't give it to them.