The malaria situation is quite different. Malaria was only recently recommended as a vaccine by the WHO steering committee. Prior to this, we were doing a pilot study to see how the vaccine could be implemented in the community. Would people continue to use bed nets, given that the vaccine is not 100% efficacious? With an understanding that people would continue to use bed nets and could get good coverage, it's recently been recommended, but it has not been rolled out more generally.
The challenge for the malaria vaccine—there's been enormous demand—has been that, at the moment, there is not a large amount of supply. There have been difficulties in manufacturing it. We are working to try to see if the vaccine can be scaled up in larger quantities, as well as having other manufacturers come in with other vaccines.
On your broader question of hesitancy, the hesitancy for COVID has been worse than with other vaccines, partially because it's been politicized in the west. They share the same mass communication platforms and social media that we have in the west. What we are seeing are rumours and misinformation spreading and causing hesitancy.
Of course, the partners on the ground are always working to try to make sure that people have the right information. Local political leaders and health care workers are working to try to provide that information to overcome that hesitancy, but it is a bigger challenge with COVID-19 than we've seen with any other vaccine to date.