Western Kansas if pretty dry and sparsely populated.
How can there be much flu out there?
—
If you were a flu, what better place to hide than a sparsely populated area?
A flea and a fly in a flue
Were imprisoned, so what could they do?
Said the fly, “let us flee!”
“Let us fly!” said the flea.
So they flew through a flaw in the flue.
Ogden Nash