Interview with Michael Conway, Senior partner at McKinsey in Philadelphia. Participation of Tracy Francis, Senior Partner at McKinsey in São Paulo and Leader of the B2C Practice for Latin America. CombatingCoronaviruscoronavirus immune systemCOVID-19COVID19immune systemIMMUNITYSavevaccinesvideoVITAMINvlogworldYouTubeRelated Posts COVID’s New Variant Is Spreading Faster Than Expected April 16, 2026 These Aren’t Just Hormone Problems April 16, 2026 New COVID Variant ‘Cicada’ Spreading Across U.S. | Seniors at Highest Risk April 15, 2026 Persistent immune activation and MS explosion #diseaseprevention April 13, 2026 Cicada COVID Variant Spreading in U.S. | What Doctors Want You to Know Now April 12, 2026 New COVID Variant Affecting Kids April 7, 2026