It isn't as if overnight we'd be able to get a vaccine for everyone who is going to need a vaccine.

Although it is still important to develop an HIV vaccine, we have significant tools already at our disposal that can make a major impact on the trajectory of this epidemic.

There is an urgent need for a protective Ebola vaccine, and it is important to establish that a vaccine is safe and spurs the immune system to react in a way necessary to protect against infection.

You might be asking too much if you're looking for one vaccine for every conceivable influenza. If you have one or two that cover the vast majority of isolates, I wouldn't be ashamed to call that a 'universal vaccine.'

The launch of phase 1 Ebola vaccine studies is a first step in developing a vaccine that could be licensed and used in the field to protect not only the front line health care workers but also those living in areas where Ebola virus exists.

Even the pandemic flu of 1918 only killed one to two percent of the people who were infected.