LIVE: Q&A on the occasion of World Immunization Week with Dr Kate O’Brien Blog 05/05/2026 · 0 Comment LIVE: Q&A on the occasion of World Immunization Week with Dr Kate O'BrienLive Q&A on World Immunization Week. Ask your question about how vaccines work!Vaccine Confidence, Misinformation & Last-Mile Delivery | World Immunization Week 2026LIVE Q&A with Dr Kate O'Brien on #WorldImmunizationWeekLIVE Q&A on COVID-19 vaccines with Dr Kate O'Brien. Ask your questions!World Immunization Week 2024: Humanly PossibleImmunization - Live Q&A of 23 April 2020Advancing global immunization and vaccine equity - Podcast on transforming WHOColorado health expert answers vaccine questions for World Immunization Week#Insights: A lightning chat with Dr Kate O’Brien, WHO’s Director of Immunization.12