- NORTH TEXAS -- The latest Texas case of swine flu involves a 7-year-old Canyon Creek Elementary School student in Richardson. School there has been canceled until at least the end of the week. The other two cases involve a 24-year-old and a 3 month old. Dallas County health officials are still trying to figure out how they were infected, but all three patients are recovering and are not hospitalized. Grayson County Emergency Management says no confirmed cases have been reported in Grayson County so far, but the preparations are underway, just in case.