Disgruntled ex-president actively undermines vaccination push - a podcast by Chris Hayes, MSNBC

Tonight: What Biden's booster shot announcement means for you. Then, how the leader of pro-Covid republicans is undermining public health yet again. Plus, more desperate pleas for help as evacuation efforts in Afghanistan increase. And what the American military is now saying about the Afghan government's collapse.
Guests: Dr. Peter Hotez, Olivia Troye, Tommy Vietor, Sarah Chayes, Nazrin Nawa, Dr. Francis Collins

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