I think that's reasonable. I understand that, again, if you're looking for major issues then, yes, those will presumably present themselves on a health screen at the time of application. If you're looking for issues that present a risk at the time of travel, then clearly that medical examination would have to occur closer to the moment of travel, particularly if you're looking at things like acute infectious diseases, because, again, an exam from a year ago is not relevant.
On March 15th, 2012. See this statement in context.