At a time when flu season is waning and we should be seeing less of it in our wastewater, Stanford researchers say an unusual surge in Type A virus is showing up at Bay Area treatment plants.

As KCBS Radio reporter Holly Quan tells us, some wonder if it could be linked to bird flu.

<p>At a time when flu season is waning and we should be seeing less of it in our wastewater, Stanford researchers say an unusual surge in Type A virus is showing up at Bay Area treatment plants.</p>
<p>As KCBS Radio reporter Holly Quan tells us, some wonder if it could be linked to bird flu.</p>

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