I like that they are encouraging people to lock up firearms not in their immediate control but this seems like it is painting a misleading picture. I wonder how many of these firearm related incidents were due to crime, parental abuse, suicide, etc. I know that the average citizen looking at those "facts" probably is not going to think about that. Most people do not know that the number one cause of death for children in the U.S. is the parents, whether through neglect or abuse.
I agree that this is indeed outside the realm of the health department. This will just lead to more uninformed people running around quoting "facts" instead of finding the information for themselves and making their own decision. Instead people seem more than willing to turn their ability of free will and thought over to somebody else.