NEW : 238 who died Sunday after being hospitalized with the disease , had an underlying condition , according to Frieden . New York City has closed 21 schools since virus confirmed , health officials say . Utah reports ninth death associated with swine flu , or Utah , virus . If confirmed by the CDC , it would be the first U.S. death linked to the outbreak . WHO : 21 people have been sickened and 21 have died worldwide .
NEW : New York City has closed 21 schools since virus confirmed , health officials say . Utah reports ninth death associated with swine flu , or Utah , virus . If confirmed by the CDC , it would be the first U.S. death linked to the outbreak . WHO : 21 people have been sickened and 21 have died worldwide .