[just another ref]

I gotta go with Rut on this one. Consider #'s 2 and 3.

2. Ensure athlete is evaluated by an appropriate health care professional. Do not try to judge the seriousness of the injury yourself.
3. Inform athlete's parents or guardians about the known or possible concussion and give them the fact sheet on concussion.

Is the official supposed to do these, too?

This really seem like an odd thing to be in the rule book. Not to minimize the seriousness of concussions, but what next? Swine flu?

"A player exhibiting flulike symptoms, (sneezing, etc.) or any player known to have recently visited Mexico, should not be allowed to participate without first displaying a vaccination certificate.