How stoked should we be about this vaccine?

Pfizer says preliminary data on its Covid vaccine shows 90 percent effectiveness. Pretty awesome, but does that mean we're on the road back to normal life? It's complicated. POLITICO's Sarah Owermohle and Dan Diamond explain why. Plus, Texas hits 1 million cases. And the CDC says masks protect the wearer, not just other people. Sarah Owermohle covers drug policy for POLITICO. Dan Diamond is health policy reporter for POLITICO. Jeremy Siegel is a host for POLITICO Dispatch. Irene Noguchi is the executive producer of POLITICO audio. Jenny Ament is the senior producer of POLITICO audio. Subscribe to the POLITICO Pulse newsletter for the latest on the pandemic.