Why that "negative effectiveness" flu vaccine study on Fox News really, really sucks.

Lately, I’ve been exclusively covering the Trump administration’s attack on our national public health and biomedical research assets. But in “normal times,” I usually write and talk about emerging medical research and news. I’m returning to that for today because with RFK Jr. at the helm of HHS—a man who said he’d never take a flu shot—it’s worth explo…