Mauricio Macri (L), mayor of Buenos Aires, declares a health emergency of the city at a press conference in Buenos Aires, Argentina, on June 30, 2009. A health emergency was declared in the city and province of Buenos Aires to prevent A/H1N1 flu from fast spreading. [Xinhua]

Mauricio Macri (C), mayor of Buenos Aires, declares a health emergency of the city at a press conference in Buenos Aires, Argentina, on June 30, 2009. A health emergency was declared in the city and province of Buenos Aires to prevent A/H1N1 flu from fast spreading. [Xinhua]