22nd WHO Regulatory Update on COVID-19

Overview

WHO will not validate any vaccine unless it is proven safe and effective. WHO welcomes the encouraging press announcements of COVID-19 vaccines that have 90% effectiveness, and look forward to reviewing the data. Safe and effective vaccines are one of the important tools to fight the COVID-19 pandemic. We must work in solidarity to get the best possible products in the least possible time and make those safe and effective products available to as many people as possible around the world, ethically and equitably.