How is The H1N1 flu virus spread? The H1N1 flu virus is contagious and is spread the same way as regular seasonal influenza. This happens when an infected person coughs or sneezes and their germs enter the nose, eyes, or throat of another person. The germs can also rest on hard surfaces like counters and doorknobs, and can be picked up on hands and transmitted to the respiratory system when someone touches their mouth and/or nose. it is not possible to catch it through blood transfusions.
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