Mexico City Thursday fully lifted all swine flu restrictions imposed on the sprawling metropolis, as global health authorities puzzled over the origins and severity of the A(H1N1) virus.
"We can calm down now," Mexico City Mayor Marcelo Ebrard told a news conference, just weeks after the city was virtually shut down.
Mexico City was at the epicenter of the outbreak of swine flu which has now spread to 41 countries, infecting more than 11,000 people and leading to 85 deaths, according to the World Health Organization.
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The capital's website dropped its five-level alert to the lowest level green on Thursday, signaling that schools, businesses and transport could function as normal, without extra health precautions.
The A(H1N1) virus has killed 78 in Mexico and infected 3,930 people, according to latest health ministry figures Thursday.
