"We're particularly worried about pigs because we know from many other outbreaks that pigs are a mixing vessel for influenza viruses," Meghan Davis noted, emphasizing the risk of genetic exchange among viruses that could lead to a more virulent strain.
A study published in the journal Science on December 5 indicated that a single genetic change in the circulating H5N1 variant as the important shift that could enable easier transmission from mammals to humans, raising concerns amongst health officials.
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