Swine Flu H1N1 virus affects lungs and stomach, whereas seasonal flu doesn’t, researchers say

 

Scientists have uncovered some intriguing clues about why the new swine flu frequently brings on gastrointestinal distress and vomiting, symptoms not usually associated with seasonal flu.

In experiments with ferrets, research teams in the United States and the Netherlands found that the new H1N1 flu virus replicated more extensively in the respiratory tract, going to the lungs, whereas the seasonal flu virus stayed in the animals’ nasal cavity. The U.S. team also found that the new virus, unlike the seasonal one, went into the ferrets’ intestinal tract.

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