questions in this as yet are, exactly how long the protection will last. it can last at least six months. beyond that we would expect it to last. but it is likely we will need repeated doses over time. we may need to update the vaccine over time as the virus evolves. that s an interesting point. obviously there isa interesting point. obviously there is a new strain which is particularly infectious. but the scientists hope this will work against that. but as the virus mutates over time, what you are saying is it is possible to make changes to the vaccine? yeah, i think the technology make it quite possible to make changes on a more rapid the timeframe than, for example, the technologies were we we re example, the technologies were we were using for influenza vaccines. some major advances in the technology driven by the extreme
jonathan, are these age groups most at risk the oldest and youngest still in. it is indeed. you look at the age spectrum, and on the younger en, the very young, have immune systems that are not fully developed, and on the older end, you have folks with weakened immune systems. so that s why cdc officials say it s very important for even more people to get vaccinated. take a listen. because we do think that influenza vaccines protect ones self-and produce the chances you ll spread the flu those around you, particularly babies under six months who are too young to be vaccinated. the frail elderly whose immune system doesn t respond as well to the vaccine. that s because, shep, when you look at vaccine effectiveness, that, too varies according to age. you have a range, from 58% of
senior advisor to president george w. bush today only on fox news sunday, check your local listings or catch it here on fox news channel, 2:00 p.m. eastern and 6:00 p.m. eric? eric: it is sunday, 10:30 in the east and you know what time that is? dr. isadore rosenfeld and sunday house call, coming up, influenza vaccines to alzheimer s, dr. rosenfeld, coming up in three minutes. hey, lawrence, my parents want to talk to you.