My friend had came back

Yesterday, I saw my H1N1 friend had came back. He said that he doesn't get H1N1. I felt it was a joke and he explained to me about why he doesn't go to school for so many days. He felt sick at 16 July for a day and the doctor want he to stay more a week to quarentine because he had a very high fever that time and after the quarentine for a week it was holiday. He came back yesterday and I was also after the holiday.