Any thoughts on flow through?

"…and we will turn a corner on this virus.

Some of the doctors say it will wash through, it will flow through. Interesting terms and very accurate. I think you’re going to find in a number of weeks it’s going to be a very accurate term."

https://www.whitehouse.gov/briefings-statements/remarks-president-trump-vice-president-pence-members-coronavirus-task-force-press-conference-3/