It seems to me that you are persisting with the angle that the clinics are not telling them they need to be vaccinated. You've drawn these conclusions from the study in the article and your poll with the students which showed that people are not aware of their vaccination status.
Sorry, I see problems here. There is no proof that the clinics did not actually provide the information because we are relying on memory here, which as we all know is not foolproof. Also, LTHAdvocate indicates that it is a standard practice for clinics to provide the information about the need for vaccination and that does not surprise me, since the legal implications of not doing that at all would be enormous.
Moreover, the news articles are not claiming that clinics are point blank failing to inform parents of the need to be vaccinated. It's more that parents need to be reminded and clinics need to follow up that it has been done. In other words, its not just enough to tell people of the risk of meningitis and that they need to get their shots.