How are infected with swine flu?

In Mexico more than 100 people caused the death of the swine flu suppositional the epidemic in the world become the concern is. United States and spread to Canada and Europe and in Australia are found to track the virus, people can go to people and human, pig and bird flu from a mixture is defined as a virus. swine flu in Mexico because of the number of people thought the 103 went dead. The greater part of people infected in 1300 were suspected to have other illnesses that describes a virus according to Mexican authorities, usually between 25-45 years has led to the death of patients