The mission of the World Health Organization (WHO) has never been more important, and we have deep respect for its experts and the work they are doing every day to fight the COVID-19 pandemic and advance global health and health security. That is why President Biden rejected and reversed the Trump Administration’s decision to disengage from the WHO. But re-engaging the WHO also means holding it to the highest standards. And at this critical moment, protecting the WHO’s credibility is a paramount priority. We have deep concerns about the way in which the early findings of the COVID-19 investigation were communicated and questions about the process used to reach them. It is imperative that this report be independent, with expert findings free from intervention or alteration by the Chinese government. To better understand this pandemic and prepare for the next one, China must make available its data from the earliest days of the outbreak. Going forward, all countries, including China, should participate in a transparent and robust process for preventing and responding to health emergencies — so that the world learns as much as possible as soon as possible.