We already did the RCT and saw that the incidence of severe malaria was reduced. Now we've done an actual rollout, and have seen in observational data a bigger

We already did the RCT and saw that the incidence of severe malaria was reduced. Now we've done an actual rollout, and have seen in observational data a bigger reduction in all-cause mortality than we expected. It's relatively high quality observational data, but of course the risk of confounds is larger than the RCT.