Swine bird flu in pigs are the rule. The virus mutates to changes from time to time and is contagious to humans. When this happens, the disease is a concern, people who have little or no immunity against it. This means that the virus can spread rapidly throughout the world. It may also be more difficult than the seasonal flu virus common to treat.
In June 2009, WHO declared the global Organization fever pandemic influenza.
Causes, incidence and risk Factors In spring of 2009 cases of infection of H1N1 avian influenza confirmed in Mexico, the U.S. and many countries worldwide.
The H1N1 flu virus is contagious and can spread from person to person. At this point, it is unclear how easily can spread between people.
It is known that the spread of influenza viruses from pigs to humans, humans and pigs. However, it may H1N1 influenza virus, not by the consumption of pork.
Among those infected with the H1N1 flu is probably the same way as seasonal flu when an infected person coughs or sneezes into the air to breathe, that other people may be in contact with the virus, something about this knob of the contaminated or treaties gate, and then touching their mouth or nose.