Bill Gates responds to vaccine conspiracy theories. Five years ago, Microsoft's founder Bill Gates warned about global pandemics on the stage of TED Talks. Event 201 and pandemic preparation Event 201 was a tabletop exercise that simulated a global pandemic, which resulted from a new coronavirus. The program was hosted in October by the Johns Hopkins Center for Health Security in partnership with the Bill and Melinda Gates Foundation and World Economic Forum. The invite-only event featured medical professionals, policy experts and business analysts all focused on how different institutions would respond to the onset of a deadly virus. The fictional coronavirus — a coronavirus, in general, being a specific kind of virus — in the scenario killed 65 million people over 18 months. Joint recommendations from participants urged international cooperation both in preparing for and handling a pandemic. The Center for Health Security has hosted three pandemic simulations prior to Event 201, going back to a 2001 simulation known as Dark Winter. The October simulation was the first time the center included private sector actors in its exercises, in the hopes of modeling how they might also react in such a crisis. Thought over belief.