8998 H1N1,AIDS,Gynecology

I am taking my USMLE Step 1 on Feb 3rd (T- 22 days) and I am sure H1N1 will be on there to some degree. Unfortunately, I took a few months break after Med 2 before signing up for the exam and while I was in class H1N1 wasn’t a hot topic of discussion. So I pretty much need a lecture. I checked CDC but they just go on and on about the vaccine and never really talk about the diagnosis. What I need to know are clinical signs or symptoms that you (and USMLE) might use to differentiate H1N1 from the usual flu. I understand neuroaminidase inhibitors are currently the DOC but is there anything else that should be brought to my attention? What are some major, common and realistic complication of H1N1. But really any information you can provide in detail while sparing me the media hype would greatly appreciated. Thank you in advance.