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flu pandemic

  • Students at a University of London class in Mexico City wear masks to protect them against swine flu in May 2009. High schools and universities closed by the pandemic had just reopened across Mexico.
    When Flu Pandemics Hit, Closing Schools Can Slow Spread
    Ted Burnham
    When schools in Alberta, Canada, closed for summer in 2009, it put the breaks on the swine flu outbreak in the province, says research from McMaster University. But authorities have to weigh the costs and benefits of preemptive closure, and there isn't always a clear answer.