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Will America be “flying blind” on bird flu? A key wastewater-tracking program may soon end

Wastewater disease surveillance has become central to public health officials’ ability to track the H5N1 bird flu that's now spread from wild birds, to poultry, to cattle, and, worryingly, to other mammals, including people. The COVID-era system that now covers about half the US population is at risk of ending this fall.

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