The "Spanish Flu" of 1918 was carried FROM HERE to EUROPE.

As long as we have reasonably open borders, you WILL be susceptible to whatever disease is out there. Including, but not excepting, a kick-butt chicken virus.
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Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, a critter that can be killed but can't be tamed. --Robert A. Heinlein