Why Is This Happening? With Chris Hayes

What happens in your body after you get a vaccine? The arrival of the COVID-19 vaccines feels like the first positive mile marker in the pandemic but folks have a lot of questions – How were they developed? How do they work? Is there anything we should worry about? Dr. Peter Hotez has been a leading voice over the last year, lending his expertise in global health and vaccine development during some of the most crucial moments of the pandemic. Now, he’s here to address our biggest questions about what he calls “the most powerful technology humankind has ever invented”. READ: Preventing The Next Pandemic: Vaccine Diplomacy In A Time Of Anti-Science  by Dr. Peter Hotez