The disease is spread at the moment. A new influenza in humans, the spread of contact between people to people. There was no contact from the pigs. Caused by influenza virus type A, H 1 ligaments 1 (A / H1N1).An infection caused by interbreeding. The gene of influenza A viruses, swine flu and flu poultry. The start of the outbreak in Mexico City. And the spread with who in many other countries, stages."The flu outbreak in Mexico." And when the World Health Organization has announced the official title on 29 April. It renames as "new influenza. Type a เอช1เอ็น1. "And use the initials.2009 "
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