of child mortality in africa, and more than 400,000 people worldwide died from the disease in 2019. african countries and international donors have invested billions into eradicating it, but recent progress has stalled. a previous vaccine released in 2015 took nearly 30 years to develop and is less than 50% effective. r21 is potentially much more effective and could also be cheaper. the cost of a single dose will be pegged at less than $3 us. the new vaccine was developed in conjunction with thejenner institute at oxford university. the team there will move to phase three trials next. thousands of people in burkina faso, mali, kenya and tanzania will participate. traditionally, it would take two or three or four or even five years to get approval after you start your phase three trial. during that time, we know hundreds of thousands of african children