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The World Health Organization (WHO) says the spread of swine flu has become a global pandemic. Cases have now been confirmed in 210 countries and territories around the world. General infection-control practices and good hygiene can help to reduce transmission. This includes covering your nose and mouth when coughing or sneezing, using a tissue when possible and disposing of it promptly. It is also important to wash your hands frequently with soap and water to reduce the spread of the virus from your hands to face or to other people, and cleaning hard surfaces like door handles frequently using a normal cleaning product.