That vaccine is mentioned in the article: > The vaccination protected 87.5% of participants who were infected after three months with the same strain of parasi

That vaccine is mentioned in the article: > The vaccination protected 87.5% of participants who were infected after three months with the same strain of parasite that was used in the inoculation, and 77.8% of those who were infected with a different strain. This is a significant improvement on earlier efforts to use live parasites in a malaria vaccine, which did not perform as well against different strains. > Another vaccine, called R21, was recently shown to be up to 77% effective in a trial of 450 young children, and a larger study is under way. I assume we can't rally make direct comparisons between the two based on these very different studies, but both appear to be working really well.