yesterday i spoke with ashley yaeger, an associate editor with "the scientist," who has been coveringthe story. >> tell us what is the pphs, is what d do. >> a program to promote public health and keep prive and public health-care costs from rising. og sreenivasan: what kind of ms does it support now that we might not be aware of. >> one of the biggest is actually immunizations, trying to create infrastructure and access toan shot vaccinations, for many more people, children included across the country. and alsook g at diseases and other healtissues that can be prevented. things like obesity, lookie, at tobacco ll of these are things that if we spend a little effort and time and money trying to prevent, we can savem long-tsts down the road. >> sreenivasan: this is in the middle of one of the worst flu epidemics that we had. people certainly are conscience of vaccina uions. teabout the global health initiatives and specifically when we tackle ebola, what was the infrastructure we had in place and what is in danger now? >> right, so in terms o tackling ebola there was a wpplement aid pa