Quote:
Originally Posted by FRPLG
Long story short(as possible).
Every living mammal has it's own version of the flu. For these species their version affects them like ours generally affects us.
In Mexico a guy with a mild case of human flu worked with pigs. A pig had swine flu. That flu-ridden worker contracted the swine flu. Tis rarely happens but isn't impossible. Usually this is no big deal beyond the orginal affected. He/she may die but the disease rarely transfers from pigs so it's almost impossible for it to pass from the affected human to another. In this particular case because the worker already had the human flu the swine interacted with the swine flu to create a more virulent human flu that is passable. This is called reassortment. The viruses pass DNA back and forth and create new strains. This is why every year they have to come up with new flu shots...because every year there is a new flu virus that came from two or more flus reassorting in a host and then passed along.
|
Nice explanation...thanks. I didn't think it was possible for those things to happen, but I guess they can.