your request for information documenting 'health information literacy activities in Public Libraries for a book chapter' seemed to me at first quite odd, a bit out of this world to be honest, in that as far as I know public libraries have not been having any resource for structured information literacy activities for years now, in the health sector as well as in many others.
So, what type of information literacy activities are you referring to?
I ask because having witnessed a certain level of abuses and misbehaviours within NHS structures myself, I would recommend not to incentivise any further confusion between social media contents and structured awareness or educational activities in this field - that could happen if the matter is not defined properly. I noticed for instance librarians and science communicators (or alleged so) tweeting as 'doctors' or 'nurses', fictionising conversations while abusing of data of patients that may be easily recognised within a certain circle of people.
Anyway, since I am investigating the issue from a compliance and records management point of view, besides personal reasons (my medical records have been messed up since 2008/2009 by 3 diverse NHS surgeries and 1 private GP, beyond any possible statistical expectation!) whatever you want to share in term of definition of such activities would be appreciated.
If it may help, I suggest to consider as truly useful resources also the website of AvMA - Action Against Medical Accidents - and the Health Services Ombudsman.
Information Management Adviser