dr. burkely did he have to cure a hangover he had to make it convenient. so, he renovated an old gospel tour bus into a mobile treatment facility. and hit the strip. the hangover heaven bus will make stops to pick up people and treat them on-site. the company found the demand for one bus was too much to handle. they also opened a clinic on the strip. clients can opt for in-room treatments. >> your body starts feeling better. and once you get up it's like wow. it does. i feel great. >> it was worth it. >> i feel like i did when i got off the plane to come to vegas. >> every patient is asked to post their experiences on the internet. dr. burke also created the hangover research institute to gather scientific evidence to back his claims. >> we started collecting hangover scores as part of our quality control. and it's to the point where, i think it's necessary to publish some of that data. >> and they expanded the business to attract the athletes and health-conscious, through their i.v. vitamin li

dr. anthony fauci, director of the national institute of allergy and infectious disease at the national institutes of health. so there are several different companies and people working on venus including a member of your team burkse hear word like "game changer," you know, these are significant results. why was this so important? >> well it's significant because of the outcome of the trial. it showed rather impressive results. now, it was done under very difficult circumstances so that's really very important. it was done right during the intensity of the outbreak itself and the data that have been released today show that the results are really quite favorable. there is still a lot of work to be done to determine, in fact, if this protection against ebola is durable, mainly that it can last for several months because we certainly would like to have this available for future outbreaks, and inevitably there will be future outbreaks of ebola. so this is an important step in our armory of preventing ebola infection in addition to the public health measure to prevent infection. >> sreenivasan: how did they figure out this was effect sniff. >> a very interesting design to the study. it's called a ring vaccination stu