My GF had swine flu a few months back when it hit GB proper - sounds pretty similar to Paul's description - if you are relatively healthy normally it is like a bad cold for 3-5 days then another couple of days getting your strength back. More serious if v young or old or having a health condition like diabetes, weak respiratory system etc.
I almost wished I had got it myself, just to know I had got it over with and built my immunity.
I picked a bad time to read The Stand for the first time it seems - San Antonio is more west than east Texas