Stockholm - Thirteen people in four European countries were Wednesday confirmed to have been infected with swine flu while 128 cases were confirmed worldwide, a European health agency reported.
The confirmed European cases were in Britain, Germany, Spain and Austria, Denis Coulombier of the European Centre for Disease Prevention and Control (ECDC) said.
"All were exposed outside the EU in Mexico," Coloumbier, head of the ECDC preparedness and response unit, said at a briefing.