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If you've noticed the new, wavy barriers in Kalamazoo, this is what they're all about.

Your questions, as always. and dr. jen ashton, back tonight. jen, hope today for a potential new treatment? >> exactly, its a drug called eidd 2801. its a pill that blocks the coronavirus from attaching to lung cells in test tubes. it could be used to treat and prevent covid-19, and it is set to start clinical trials in humans this spring. >> not a moment too soon. jen, thank you. when we come back, a note about our own loss here at abc news. when we come back, a note abou r own loss here at...