u.s. navnavy, along with th national institutes of health and a pharmaceutical company.y've been working on it for some time, and even the bill and melinda gates foundation that you know so well has been involved in some of this work. it's important for the u.s. troops around the world and they encounter malaria very often. basically what they've done in this very small study is achieve 100% protection against malaria, very small population, but it's a real beginning and if they can scale it up, if they can get some large-scale testing done, if they can get it licensed, get it into production, it may be something that makes a real difference. >> yeah. i mean, you've probably taken some of the existing drugs to prevent malaria in all your travels. i know i have. and there can be some side effects, fda, i don't know if you heard this, barbara, issued a warning about malaria saying it could have permanent side effects, it's a common medication to take to prevent malaria. are they talking about potential side effects from this vaccine? >> what they tell me is because it's a