U.S. President Barack Obama officially declared H1N1 a national emergency On October 25, 2009. 207 countries and overseas territories/communities have reported laboratory confirmed cases of pandemic influenza H1N1 2009, including at least 8,768 deaths has been stated by worldwide update by the U.N.'s World Health Organization (WHO) by November 29, 2009. Continue on, it has been stated by the U.N.'s World Health Organization (WHO) on January 15 2010 that 208 countries and overseas territories or communities have reported laboratory confirmed cases of pandemic influenza H1N1 2009, including at least 13,554 deaths.

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Affection control

On April 26, 2009, the Chinese government announced that visitors returning from flu-affected areas who experienced flu-like symptoms within two weeks would be quarantined. Some non-US airlines, mostly Asian ones, including Singapore Airlines, China Eastern Airlines, China Southern Airlines, Cathay Pacific, and Mexicana Airlines, took measures such as stepping up cabin cleaning, installing state-of-the-art air filters, and allowing in-flight staff to wear face masks.US airlines made no major changes as of the beginning of June 2009, but continued standing practices that included looking for passengers with symptoms of flu, measles, or other infections, and relying on in-flight air filters to ensure that aircraft were sanitized.[80] Masks were not generally provided by airlines and the CDC did not recommend that airline crews wear them.