The day The Swine Flu hit me was 8/5/09. This will show you just how fast it comes on. We were out at the park after the weatherman's got over it. Playing with the ducks. Within 10 minutes of the last pic, he was vomiting and feverish. He got diarrhea the next day and it lasted for 3 days. The vomiting ended about the time the diarrhea started.
He was a bit better 5 days later. I was just getting over it as well. He slept a lot. It was rare, but he did.