Can the US vaccinate enough of its population to prevent hundreds of thousands of deaths before new and more contagious COVID-19 variants take hold? And will these vaccines even be effective against more adaptable mutations of the virus? Surgeon and public health expert Dr. Atul Gawande, most recently of the Biden/Harris COVID-19 Transition Task Force, joins Ian Bremmer on GZERO World to discuss the latest in the global effort to vaccinate our way out of this pandemic. He also explains why people should get the Johnson & Johnson vaccine if offered the chance, despite its lower overall efficacy rate compared to the mRNA-based vaccines from Pfizer and Moderna.