| http://www.w3.org/ns/prov#value | - When it does pass from birds to humans, it is usually fatal.Two earlier studies by researchers in the United States and Europe have found that with as few as five mutations, H5N1 flu can become transmissible in the air between mammals, including potentially from person to person.Their work was highly controversial because they manipulated viruses in the lab to produce the new mutated strains.MUTAT
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