portals, if you will, does it not? >> caller: that's exactly what happened. you know, this vaccine is so good we eliminated local measles in the entire western hemisphere. however, if there a lots of unvaccinated children as there are now, measles can be imported from abroad get into those populations, and then spread. of course, that's what's happened with the disney outbreak which is now seeding around the country and secondary outbreaks are occurring. >> do you get the sense that we're peaking at all, or do you think the numbers are going to get much worse? >> caller: oh, measles is so highly contagious and sufficient unvaccinated children, we're going to see more for a while. people do not realize how serious measles is. before we had vaccines in the united states each year, 400 to 500 children died. i say died of measles and its complications. this is not a disease to fool with. the vaccine is safe and wonderfully effective. >> infants do not get it until 12 months old, should that be reassessed given the large number of unvaccinated children out there? could it be given earlier or not? >> it could be begin